Comscore Releases July 2008 U.S. Search Engine Rankings

RESTON, VA, August 21, 2008 – 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 July 2008, Americans conducted 11.8 billion core searches (up 2 percent versus June) as Google Sites slightly extended its lead in core search market share by 0.4 percentage points.

July 2008 U.S. Core Search Rankings

Google Sites led the U.S. core search market in July with 61.9 percent of the searches conducted, up from 61.5 percent in June, followed by Yahoo! Sites (20.5 percent), Microsoft Sites (8.9 percent), Ask Network (4.5 percent), and AOL LLC (4.2 percent).

* 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 11.8 billion searches at the core search engines, representing a 2-percent gain versus June. Google Sites handled nearly 7.3 billion core searches (up 2 percent), followed by Yahoo! Sites with 2.4 billion and Microsoft Sites with 1 billion.

* 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 U.S. Expanded Search Rankings

In the Comscore July 2008 analysis of the top properties where search activity is observed, Google Sites led with 9.9 billion searches, a 4-percent increase versus June. Yahoo! Sites ranked second with 2.5 billion searches, followed by Microsoft Sites with 1.1 billion and AOL LLC with 814 million.

To request more information on Comscore qSearch 2.0, please visit http://www.comscore.com/contact

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

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