comScore Releases October 2009 U.S. Search Engine Rankings

Ad Operations OnlineRESTON, VA – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world,released its monthly comScore qSearch analysis of the U.S. search marketplace. In October 2009, Americans conducted 14.3 billion core searches, with Google Sites accounting for 65.4 percent search market share, up from 64.9 percent in September. Microsoft Sites grabbed 9.9 percent market share, up 0.5 percentage points versus September.

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.

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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

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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.
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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).

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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.
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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.

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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%
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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.