Press Releases

January 16, 2009

comScore Releases December 2008 U.S. Search Engine Rankings

RESTON, VA, January 16, 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 December 2008, Americans conducted 12.7 billion core searches, a 3-percent increase versus November.

December 2008 U.S. Core Search Rankings

Google Sites led the U.S. core search market in December with 63.5 percent of the searches conducted, unchanged from November, followed by Yahoo! Sites (20.5 percent), Microsoft Sites (8.3 percent), Ask Network (3.9 percent), and AOL LLC (3.8 percent).

comScore Core Search Report*
December 2008 vs. November 2008
Total U.S. – Home/Work/University Locations
Source: comScore qSearch 2.0
Core Search Entity Share of Searches (%)
Nov-08 Dec-08 Point Change Dec-08 vs. Nov-08
Total Core Search 100.0 100.0 N/A
Google Sites 63.5 63.5 0.0
Yahoo! Sites 20.4 20.5 0.1
Microsoft Sites 8.3 8.3 0.0
Ask Network 4.0 3.9 -0.1
AOL LLC 3.8 3.8 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 12.7 billion searches at the core search engines, up 3 percent from November. Google Sites handled 8 billion core searches, followed by Yahoo! Sites with 2.6 billion and Microsoft Sites with 1.1 billion.

comScore Core Search Report*
December 2008 vs. November 2008
Total U.S. – Home/Work/University Locations
Source: comScore qSearch 2.0
Core Search Entity Search Queries (MM)
Nov-08 Dec-08 Percent Change Dec-08 vs. Nov-08
Total Core Search 12,264 12,650 3%
Google Sites 7,784 8,036 3%
Yahoo! Sites 2,506 2,593 3%
Microsoft Sites 1,015 1,055 4%
Ask Network 494 488 -1%
AOL LLC 465 478 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.

December U.S. Expanded Search Rankings

In the comScore December 2008 analysis of the top properties where search activity is observed, Google Sites led with 11.2 billion searches, up 4 percent versus November. Yahoo! Sites ranked second with 2.7 billion searches, followed by Microsoft Sites with 1.1 billion and AOL LLC with 740 million.

comScore Expanded Search Query Report
December 2008 vs. November 2008
Total U.S. – Home/Work/University Locations
Source: comScore qSearch 2.0
Expanded Search Entity Search Queries (MM)
Nov-08 Dec-08 Percent Change Dec-08 vs. Nov-08
Total Expanded Search 18,058 18,688 3%
Google Sites 10,767 11,152 4%
Google 7,976 8,247 3%
YouTube/All Other 2,791 2,905 4%
Yahoo! Sites 2,620 2,714 4%
Yahoo! 2,594 2,686 4%
All Other 26 28 8%
Microsoft Sites 1,053 1,092 4%
MSN-Windows Live 959 997 4%
Microsoft/All Other 94 95 1%
AOL LLC 725 740 2%
AOL Search Network 412 424 3%
MapQuest/All Other 313 316 1%
Ask Network 631 620 -2%
Ask.com 326 308 -6%
MyWebSearch.com/ All Other 305 312 2%
Fox Interactive Media 543 526 -3%
MySpace 535 516 -4%
All Other 8 10 25%
eBay 469 500 7%
Craigslist.org 369 387 5%
Amazon Sites 157 204 30%
Facebook.com 162 161 -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

Contact:
Andrew Lipsman
comScore, Inc.
+1 312 775 6510
press@comscore.com