Comscore Releases September 2009 U.S. Search Engine Rankings

RESTON, VA, October 14, 2009 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly Comscore qSearch analysis of the U.S. search marketplace. In September 2009, Americans conducted 13.8 billion core searches, with Google Sites accounting for 64.9 percent search market share. Microsoft Sites grabbed 9.4 percent market share, representing a slight gain versus August.

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

Press
Bill Daddi
Daddi Brand Communications
646-370-1341
press@comscore.com