U.S. Explicit Core Search

Google Sites led the U.S. explicit core search market in February with 65.4 percent market share, followed by Yahoo! Sites with 16.1 percent and Microsoft sites with 13.6 percent (up 0.5 percentage points). Ask Network accounted for 3.2 percent of explicit core searches, followed by AOL, Inc. with 1.7 percent.

*“Explicit Core Search” excludes contextually driven searches that do not reflect specific user intent to interact with the search results.

More than 15.4 billion explicit core searches were conducted in February. Google Sites ranked first with 10.1 billion searches, followed by Yahoo! Sites with 2.5 billion, Microsoft Sites with 2.1 billion, Ask Network with 491 million and AOL, Inc. with 267 million.

U.S. Total Core Search

Google Sites accounted for 64.9 percent of total core search queries conducted (up 0.3 percentage points), followed by Yahoo! Sites with 17.3 percent and Microsoft Sites with 13.4 percent (up 0.6 percentage points). Ask Network comprised 2.9 percent of total search queries, followed by AOL, Inc. with 1.6 percent.

* “Total Core Search” is based on the five major search engines, including partner searches, cross-channel searches and contextual searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in these numbers.

Americans conducted nearly 17.0 billion total core search queries in February. Google Sites ranked first with 11.0 billion searches, followed by Yahoo! Sites with 2.9 billion and Microsoft Sites with 2.3 billion.

“Powered By” Reporting

In order to accurately represent the continued evolution of the search landscape, comScore is providing insight into the share of algorithmic explicit searches that are powered by Google and Bing, and branded as such to the consumer. Google’s “powered by” share is composed of searches conducted at Google entities, as well as branded searches at AOL and Ask. Bing’s “powered by” share is composed of searches conducted at Microsoft entities as well as branded Yahoo! entities.

In February, 68.0 percent of searches carried organic search results from Google, while 26.2 percent of searches were powered by Bing organic results.

About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital business analytics. For more information, please visit www.comscore.com/companyinfo.

April 2010 U.S. Core Search Rankings

Google Sites led the U.S. core search market in April with 64.4 percent of the searches conducted, followed by Yahoo! Sites (up 0.8 percentage points to 17.7 percent), and Microsoft Sites (up 0.1 percentage points to 11.8 percent).

Both Yahoo! Sites and Microsoft Sites have experienced gains due in part to the introduction of new site navigation experiences that tie content and related search results together within several channels. These features provide search results to users as they navigate through topical content and meet comScore’s established criteria for counting search queries. Ask Network captured 3.7 percent of the search market, followed by AOL LLC with 2.4 percent.

_____________________________________________________________________________
comScore Core Search Report*
April 2010 vs. March 2010
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
_____________________________________________________________________________
Core Search Entity   Share of Searches (%)
Mar-10    Apr-10    Point Change
Apr-10 vs. Mar-10
Total Core Search    100.0%    100.0%       N/A
Google Sites          65.1%     64.4%      -0.7
Yahoo! Sites          16.9%     17.7%       0.8
Microsoft Sites       11.7%     11.8%       0.1
Ask Network            3.8%      3.7%      -0.1
AOL LLC Network        2.5%      2.4%      -0.1
_____________________________________________________________________________
* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.

Americans conducted 15.5 billion searches in April, up slightly from March. Google Sites accounted for 10 billion searches, followed by Yahoo! Sites (2.8 billion), Microsoft Sites (1.8 billion), Ask Network (574 million) and AOL LLC (371 million).

_____________________________________________________________________________
comScore Core Search Report*
April 2010 vs. March 2010
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
_____________________________________________________________________________
Core Search Entity   Search Queries (MM)
Mar-10    Apr-10    Percent Change
Apr-10 vs. Mar-10
Total Core Search    15,427    15,532        1%
Google Sites         10,048    10,006        0%
Yahoo! Sites          2,605     2,752        6%
Microsoft Sites       1,802     1,829        1%
Ask Network             593       574       -3%
AOL LLC                 380       371       -2%
_____________________________________________________________________________
* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.

April 2010 U.S. Expanded Search Rankings

In the April analysis of the top properties where search activity is observed, Google Sites led the search market with 14.0 billion search queries, followed by Yahoo! Sites with 2.8 billion queries and Microsoft Sites with 1.9 billion. Amazon Sites experienced sizeable growth during the month with an 8-percent increase to 245 million searches, rounding off the top 10 ranking.

_____________________________________________________________________________
comScore Expanded Search Query Report
April 2010 vs. March 2010
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
_____________________________________________________________________________
Expanded Search Entity          Search Queries (MM)
Mar-10    Apr-10    Percent Change
Apr-10 vs. Mar-10
Total Internet                  23,866    23,658       -1%
Google Sites                    14,252    13,996       -2%
Google                      10,547    10,556        0%
YouTube/All Other            3,705     3,440       -7%
Yahoo! Sites                     2,689     2,839        6%
Yahoo!                       2,676     2,827        6%
All Other                       13        12       -8%
Microsoft Sites                  1,862     1,883        1%
Bing                         1,604     1,575       -2%
Microsoft/All Other            258       308       19%
Ask Network                        742       719       -3%
ASK.COM                        332       327       -2%
MyWebSearch.com/ All Other     410       392       -4%
craigslist, inc.                   664       685        3%
eBay                               659       641       -3%
Facebook.com                       647       624       -4%
AOL LLC                            594       604        2%
AOL Search Network             319       302       -5%
MapQuest/All Other             275       302       10%
Fox Interactive Media              406       312      -23%
MySpace                        402       309      -23%
All Other                        4         3      -25%
Amazon Sites                       226       245        8%
_____________________________________________________________________________

About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo.

_____________________________________________________________________
comScore Core Search Report*
December 2009 vs. November 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity      Share of Searches (%)
Nov-09      Dec-09    Point Change
Dec-09 vs. Nov-09
Total Core Search       100.0%      100.0%          N/A
Google Sites             65.6%       65.7%          0.1
Yahoo! Sites             17.5%       17.3%         -0.2
Microsoft Sites          10.3%       10.7%          0.4
Ask Network               3.8%        3.7%         -0.1
AOL LLC Network           2.8%        2.6%         -0.2

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________

Americans conducted 14.7 billion searches in December, up 2 percent from November. Google Sites accounted for nearly 9.7 billion searches, followed by Yahoo! Sites (2.5 billion), Microsoft Sites (1.6 billion), Ask Network (545 million) and AOL LLC (383 million).

_____________________________________________________________________
comScore Core Search Report*
December 2009 vs. November 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity      Search Queries (MM)
Nov-09     Dec-09    Percent Change
Dec-09 vs. Nov-09
Total Core Search       14,445     14,737          2%
Google Sites             9,479      9,688          2%
Yahoo! Sites             2,534      2,544          0%
Microsoft Sites          1,483      1,576          6%
Ask Network                548        545         -1%
AOL LLC                    401        383         -4%

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________

December 2009 U.S. Expanded Search Rankings
In the December analysis of the top properties where search activity is observed, Google Sites led the search market with more than 14.0 billion search queries, followed by Yahoo! Sites with 2.6 billion queries and Microsoft Sites with 1.6 billion searches. Bing experienced large growth during the month with a 6-percent increase in query volume to nearly 1.4 billion searches. eBay and Amazon Sites experienced gains in December as retail search activity picked up during the holiday season.

_____________________________________________________________________
comScore Expanded Search Query Report
December 2009 vs. November 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch

Expanded Search Entity            Search Queries (MM)
Nov-09     Dec-09     Percent Change
Dec-09 vs. Nov-09
Total Internet                    22,280     22,741            2%
Google Sites                      13,751     14,019            2%
Google                         9,878     10,101            2%
YouTube/All Other              3,873      3,918            1%
Yahoo! Sites                       2,622      2,629            0%
Yahoo!                         2,599      2,605            0%
All Other                         23         24            4%
Microsoft Sites                    1,521      1,620            7%
Bing                           1,324      1,399            6%
Microsoft/All Other              197        221           12%
Ask Network                          715        696           -3%
ASK.COM                          348        332           -5%
MyWebSearch.com/ All Other       367        364           -1%
eBay                                 635        680            7%
AOL LLC                              611        588           -4%
AOL Search Network               349        325           -7%
MapQuest/All Other               262        263            0%
craigslist, inc.                     568        583            3%
Fox Interactive Media                447        424           -5%
MySpace Sites                    439        416           -5%
All Other                          8          8            0%
Facebook.com                         354        351           -1%
Amazon Sites                         250        302           21%
_____________________________________________________________________

About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo.

October 2009 U.S. Core Search Rankings

Google Sites led the U.S. core search market in October with 65.4 percent of the searches conducted, followed by Yahoo! Sites (18.0 percent), and Microsoft Sites (9.9 percent). Ask Network captured 3.9 percent of the search market, followed by AOL LLC with 2.9 percent.

_____________________________________________________________________
comScore Core Search Report*
October 2009 vs. September 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity   Share of Searches (%)
Sep-09   Oct-09     Point Change
Oct-09 vs. Sep-09
Total Core Search    100.0%   100.0%          N/A
Google Sites          64.9%    65.4%          0.5
Yahoo! Sites          18.8%    18.0%         -0.8
Microsoft Sites        9.4%     9.9%          0.5
Ask Network            3.9%     3.9%          0.0
AOL LLC Network        3.0%     2.9%         -0.1

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________

Americans conducted 14.3 billion searches in October, up 3 percent from September. Google Sites accounted for 9.4 billion searches, followed by Yahoo! Sites (2.6 billion), Microsoft Sites (1.4 billion), Ask Network (552 million) and AOL LLC (412 million).

_____________________________________________________________________
comScore Core Search Report*
October 2009 vs. September 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity    Search Queries (MM)
Sep-09    Oct-09    Percent Change
Oct-09 vs. Sep-09
Total Core Search     13,836   14,309          3%
Google Sites           8,975    9,362          4%
Yahoo! Sites           2,600    2,571         -1%
Microsoft Sites        1,305    1,412          8%
Ask Network              541      552          2%
AOL LLC                  416      412         -1%

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________

October 2009 U.S. Expanded Search Rankings

In the October analysis of the top properties where search activity is observed, Google Sites led the search market with 13.5 billion search queries, followed by Yahoo! Sites with 2.7 billion queries and Microsoft Sites with 1.5 billion searches. Bing experienced the largest growth of the top ten expanded search properties with an 8-percent increase in query volume to more than 1.2 billion searches.

_____________________________________________________________________
comScore Expanded Search Query Report
October 2009 vs. September 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch

Expanded Search Entity       Search Queries (MM)
Sep-09    Oct-09     Percent Change
Oct-09 vs. Sep-09
Total Internet               21,334    22,032          3%
Google Sites                 12,839    13,505          5%
Google                    9,373     9,788          4%
YouTube/All Other         3,466     3,717          7%
Yahoo! Sites                  2,692     2,663         -1%
Yahoo!                    2,668     2,639         -1%
All Other                    24        24          0%
Microsoft Sites               1,352     1,457          8%
Bing                      1,156     1,245          8%
Microsoft/All Other         196       212          8%
Ask Network                     718       730          2%
ASK.COM                     339       348          3%
MyWebSearch.com/ All Other  379       382          1%
AOL LLC                         625       628          0%
AOL Search Network          366       359         -2%
MapQuest/All Other          259       269          4%
eBay                            621       617         -1%
craigslist, inc.                624       594         -5%
Fox Interactive Media           500       478         -4%
MySpace Sites               494       472         -4%
All Other                     6         6          0%
Facebook.com                    384       331        -14%
Amazon Sites                    216       212         -2%
_____________________________________________________________________

About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo.

September 2009 U.S. Core Search Rankings

Google Sites led the U.S. core search market in September with 64.9 percent of the searches conducted, followed by Yahoo! Sites (18.8 percent), and Microsoft Sites (9.4 percent). Ask Network captured 3.9 percent of the search market, followed by AOL LLC with 3.0 percent.

_____________________________________________________________________________
comScore Core Search Report*
September 2009 vs. August 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity     Share of Searches (%)
                       Aug-09   Sep-09   Point Change
                                          Sep-09 vs.
                                            Aug-09
Total Core Search      100.0%   100.0%        N/A
Google Sites            64.6%    64.9%        0.3
Yahoo! Sites            19.3%    18.8%       -0.5
Microsoft Sites          9.3%     9.4%        0.1
Ask Network              3.9%     3.9%        0.0
AOL LLC Network          3.0%     3.0%        0.0
 
* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________________
 
Americans conducted 13.8 billion searches in September, down 1 percent from August (which had one additional day compared to September). Google Sites accounted for 9 billion searches, followed by Yahoo! Sites (2.6 billion), Microsoft Sites (1.3 billion), Ask Network (541 million) and AOL LLC (416 million).
 
_____________________________________________________________________________
comScore Core Search Report*
September 2009 vs. August 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity    Search Queries (MM)
                      Aug-09   Sep-09   Percent Change
                                          Sep-09 vs.
                                            Aug-09
Total Core Search     13,924   13,836        -1%
Google Sites           8,994    8,975         0%
Yahoo! Sites           2,685    2,600        -3%
Microsoft Sites        1,288    1,305         1%
Ask Network              541      541         0%
AOL LLC                  415      416         0%
 
* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________________
 
September 2009 U.S. Expanded Search Rankings
 
In the September analysis of the top properties where search activity is observed, Google Sites led the search market with 12.8 billion search queries, followed by Yahoo! Sites with 2.7 billion queries and Microsoft Sites with nearly 1.4 billion searches. Facebook.com experienced the largest growth of the top ten expanded search properties with a 19-percent increase in query volume to 384 million searches.
 
_____________________________________________________________________________
comScore Expanded Search Query Report
September 2009 vs. August 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
 
Expanded Search Entity           Search Queries (MM)
                                 Aug-09    Sep-09    Percent Change
                                                       Sep-09 vs.
                                                         Aug-09
Total Internet                   21,801    21,334          -2%
Google Sites                     13,006    12,839          -1%
    Google                        9,437     9,373          -1%
    YouTube/All Other             3,569     3,466          -3%
Yahoo! Sites                      2,800     2,692          -4%
    Yahoo!                        2,776     2,668          -4%
    All Other                        24        24           0%
Microsoft Sites                   1,343     1,352           1%
    Bing                          1,151     1,156           0%
    Microsoft/All Other             192       196           2%
Ask Network                         646       718          11%
    ASK.COM                         343       339          -1%
    MyWebSearch.com/ All Other      303       379          25%
AOL LLC                             673       625          -7%
    AOL Search Network              354       366           3%
    MapQuest/All Other              319       259         -19%
craigslist, inc.                    682       624          -9%
eBay                                650       621          -4%
Fox Interactive Media               569       500         -12%
    MySpace Sites                   562       494         -12%
    All Other                         7         6         -14%
Facebook.com                        324       384          19%
Amazon Sites                        216       191         -12%
_____________________________________________________________________________
 
About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo

_____________________________________________________________________________

comScore Core Search Report*
August 2009 vs. July 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity    Share of Searches (%)
Jul-09       Aug-09       Point Change
Aug-09 vs. Jul-09
Total Core Search     100.0%       100.0%                N/A
Google Sites           64.7%        64.6%               -0.1
Yahoo! Sites           19.3%        19.3%                0.0
Microsoft Sites         8.9%         9.3%                0.4
Ask Network             3.9%         3.9%                0.0
AOL LLC Network         3.1%         3.0%               -0.1

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________________

Americans conducted 13.9 billion searches in August, up 3 percent from July. Google Sites accounted for 9 billion searches, followed by Yahoo! Sites (2.7 billion), Microsoft Sites (1.3 billion), Ask Network (541 million) and AOL LLC (415 million).

_____________________________________________________________________________
comScore Core Search Report*
August 2009 vs. July 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Core Search Entity    Search Queries (MM)
Jul-09       Aug-09       Percent Change
Aug-09 vs. Jul-09
Total Core Search     13,575       13,924                   3%
Google Sites           8,783        8,994                   2%
Yahoo! Sites           2,625        2,685                   2%
Microsoft Sites        1,208        1,288                   7%
Ask Network              536          541                   1%
AOL LLC                  424          415                  -2%

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
_____________________________________________________________________________

August 2009 U.S. Expanded Search Rankings

In the August 2009 analysis of the top properties where search activity is observed, Google Sites led the search market with 13 billion search queries, followed by Yahoo! Sites with 2.8 billion queries. Microsoft Sites ranked third with more than 1.3 billion searches, up 6 percent from July, followed by craigslist, inc. with 682 million searches. Facebook.com experienced the largest growth of the top ten expanded search properties with a 20-percent increase in query volume to 324 million searches.

_____________________________________________________________________________
comScore Expanded Search Query Report
August 2009 vs. July 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch
Expanded Search Entity        Search Queries (MM)
Jul-09       Aug-09       Percent Change
Aug-09 vs. Jul-09
Total Internet                21,558       21,801                   1%
Google Sites                  12,851       13,006                   1%
Google                     9,217        9,437                   2%
YouTube/All Other         3,634        3,569                  -2%
Yahoo! Sites                   2,762        2,800                   1%
Yahoo!                     2,738        2,776                   1%
All Other                    24           24                   0%
Microsoft Sites                1,262        1,343                   6%
Bing                       1,076        1,151                   7%
Microsoft/All Other         186          192                   3%
craigslist, inc.                 673          682                   1%
AOL LLC                          697          673                  -3%
AOL Search Network           362          354                  -2%
MapQuest/All Other          335          319                  -5%
eBay                             709          650                  -8%
Ask Network                      613          646                   5%
ASK.COM                      338          343                   1%
MyWebSearch.com/ All Other  275          303                  10%
Fox Interactive Media            603          569                  -6%
MySpace Sites                596          562                  -6%
All Other                     7            7                   0%
Facebook.com                     270          324                  20%
Amazon Sites                     197          216                  10%
_____________________________________________________________________________

About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo.

July 2009 U.S. Core Search Rankings

Google Sites led the U.S. core search market in June with 64.7 percent of the searches conducted, followed by Yahoo! Sites (19.3 percent), and Microsoft Sites (8.9 percent). Ask Network captured 3.9 percent of the search market, followed by AOL LLC with 3.1 percent.

_____________________________________________________________________

comScore Core Search Report*

July 2009 vs. June 2009

Total U.S. – Home/Work/University Locations

Source: comScore qSearch

Core Search Entity Search Queries (MM)

Jun-09 Jul-09 Point Change

Jul-09 vs. Jun-09

Total Core Search 100.0% 100.0% N/A

Google Sites 65.0% 64.7% -0.3

Yahoo! Sites 19.6% 19.3% -0.3

Microsoft Sites 8.4% 8.9% 0.5

Ask Network 3.9% 3.9% 0.0

AOL LLC Network 3.1% 3.1% 0.0

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.

_____________________________________________________________________

Americans conducted 13.6 billion searches in July, down slightly for the third consecutive month as the summer months tend to see lighter overall search volume with people spending more time outdoors and on vacation. Google Sites accounted for 8.9 billion searches, followed by Yahoo! Sites (2.6 billion), Microsoft Sites (1.2 billion), Ask Network (536 million) and AOL LLC (424 million).

_____________________________________________________________________

comScore Core Search Report*

July 2009 vs. June 2009

Total U.S. – Home/Work/University Locations

Source: comScore qSearch

Core Search Entity Search Queries (MM)

Jun-09 Jul-09 Percent Change

Jul-09 vs. Jun-09

Total Core Search 14,060 13,575 -3%

Google Sites 9,135 8,783 -4%

Yahoo! Sites 2,755 2,625 -5%

Microsoft Sites 1,179 1,208 2%

Ask Network 552 536 -3%

AOL LLC 439 424 -3%

* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.

_____________________________________________________________________

July 2009 U.S. Expanded Search Rankings

In the July 2009 analysis of the top properties where search activity is observed, Google Sites led the search market with 12.9 billion searches, followed by Yahoo! Sites with 2.8 billion. Microsoft Sites ranked third with 1.3 billion searches, up 3 percent from May, followed by eBay with 709 million. Facebook.com experienced the highest growth of the top ten expanded search properties with a 35-percent increase.

comScore Expanded Search Query Report

July 2009 vs. June 2009

Total U.S. – Home/Work/University Locations

Source: comScore qSearch

Expanded Search Entity Search Queries (MM)

Jun-09 Jul-09 Percent Change

Jul-09 vs. Jun-09

Total Expanded Search 21,818 21,899 0%

Google Sites 13,147 12,851 -2%

Google 9,555 9,217 -4%

YouTube/All Other 3,592 3,634 1%

Yahoo! Sites 2,900 2,762 -5%

Yahoo! 2,877 2,738 -5%

All Other 23 24 4%

Microsoft Sites 1,230 1,262 3%

Bing 1,021 1,076 5%

Microsoft/All Other 209 186 -11%

eBay 677 709 5%

AOL LLC 736 697 -5%

AOL Search Network 371 362 -2%

MapQuest/All Other 365 335 -8%

craigslist, inc. 621 673 8%

Ask Network 637 613 -4%

Ask.com 362 338 -7%

MyWebSearch.com/ All Other 275 275 0%

Fox Interactive Media 672 603 -10%

MySpace Sites 663 596 -10%

All Other 9 7 -22%

Facebook.com 200 270 35%

Amazon Sites 198 197 -1%

_____________________________________________________________________

About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo.

May 2009 U.S. Core Search Rankings

Google Sites led the U.S. core search market in April with 65.0 percent of the searches conducted, followed by Yahoo! Sites (20.1 percent), Microsoft Sites (8.0 percent), Ask Network (3.9 percent) and AOL LLC (3.1 percent).

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comScore Core Search Report*

May 2009 vs. April 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch

Core Search Entity               Share of Searches (%)
Apr-09         May-09        Point Change
May-09 vs. Apr-09

Total Core Search        100.0          100.0            N/A

Google Sites              64.2           65.0            0.8
Yahoo! Sites              20.4           20.1           -0.3
Microsoft Sites**          8.2            8.0           -0.2
Ask Network                3.8            3.9            0.1
AOL LLC                    3.4            3.1           -0.3
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* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.

**May data does not include search activity at Microsoft Bing, which was launched on June 1. Microsoft Bing will be included with June qSearch data.

Americans conducted 14.3 billion searches at the core search engines. Google Sites accounted for 9.3 billion core searches, followed by Yahoo! Sites with 2.9 billion and Microsoft Sites with 1.1 billion.

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comScore Core Search Report*

May 2009 vs. April 2009
Total U.S. – Home/Work/University Locations
Source: comScore qSearch

Core Search Entity               Search Queries (MM)
Apr-09        May-09      Percent Change
May-09 vs. Apr-09

Total Core Search        14,751        14,327           -3

Google Sites              9,476         9,307           -2
Yahoo! Sites              3,008         2,877           -4
Microsoft Sites**         1,208         1,149           -5
Ask Network                 563           555           -1
AOL LLC                     496           438          -12
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* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.

**May data does not include search activity at Microsoft Bing, which was launched on June 1. Microsoft Bing will be included with June qSearch data.

May 2009 U.S. Expanded Search Rankings

In the comScore May 2009 analysis of the top properties where search activity is observed, Google Sites led with 13 billion searches. Yahoo! Sites ranked second with 3 billion searches, followed by Microsoft Sites (1.2 billion) and AOL LLC (721 million).

Please refer to the following link for the Expanded Search Rankings: http://www.comscore.com/Press_Events/Press_Releases/2009/6/comScore_Releases_May_2009_U.S._Search_Engine_Rankings

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