Comscore Releases March 2008 U.S. Search Engine Rankings

RESTON, VA, April 15, 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. March 2008 saw Americans conduct 10.8 billion core searches, representing a 9-percent increase versus February.

March 2008 U.S. Core Search Rankings

In March, Google Sites extended its share of core searches to 59.8 percent, up from 59.2 percent the previous month. Yahoo! Sites ranked second with 21.3 percent, followed by Microsoft Sites (9.4 percent), AOL LLC (4.8 percent), and Ask Network (4.7 percent).

Comscore Core Search Report*
March 2008 vs. February 2008
Total U.S. – Home/Work/University Locations
Source: Comscore qSearch 2.0

Core Search Entity

Share of Searches (%)

Feb-08

Mar-08

Point Change

Mar-08 vs. Feb-08

Total Core Search

100.0%

100.0%

0.0

Google Sites

59.2%

59.8%

0.6

Yahoo! Sites

21.6%

21.3%

-0.3

Microsoft Sites

9.6%

9.4%

-0.2

AOL LLC

4.9%

4.8%

-0.1

Ask Network

4.6%

4.7%

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 10.8 billion searches at the core search engines, representing a 9-percent gain versus February. Each of the five core search engines experienced search query gains during the month. Google Sites saw more than 6.4 billion core searches, followed by Yahoo! Sites with 2.3 billion, and Microsoft Sites with 1 billion.

Comscore Core Search Report*
March 2008 vs. February 2008
Total U.S. – Home/Work/University Locations
Source: Comscore qSearch 2.0

Core Search Entity

Search Queries (MM)

Feb-08

Mar-08

Percent Change

Mar-08 vs. Feb-08

Total Core Search

9,882

10,771

9%

Google Sites

5,855

6,438

10%

Yahoo! Sites

2,136

2,296

7%

Microsoft Sites

953

1,012

6%

AOL LLC

488

521

7%

Ask Network

450

503

12%

* 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.

March U.S. Expanded Search Rankings

In the March 2008 analysis of the Top 50 properties where search activity is observed, Google Sites led with 8.3 billion searches. Yahoo! Sites ranked second with 2.4 billion searches, followed by Microsoft Sites (more than 1 billion), and AOL LLC (891 million).

Comscore Expanded Search Query Report
March 2008 vs. February 2008
Total U.S. – Home/Work/University Locations
Source: Comscore qSearch 2.0

Expanded Search Entity

Search Queries (MM)

Feb-08

Mar-08

Percent Change

Mar-08 vs. Feb-08

Total Expanded Search

13,806

15,088

9%

Google Sites

7,390

8,267

12%

Google

5,917

6,531

10%

YouTube/All Other

1,473

1,736

18%

Yahoo! Sites

2,262

2,391

6%

Yahoo!

2,234

2,359

6%

All Other

28

32

14%

Microsoft Sites

984

1,054

7%

MSN-Windows Live

952

1,019

7%

Microsoft/All Other

32

35

9%

AOL LLC

864

891

3%

AOL

493

527

7%

MapQuest/All Other

371

364

-2%

Ask Network

452

506

12%

Ask.com

283

316

12%

MyWebSearch.com/ All Other

169

190

12%

eBay

480

474

-1%

Fox Interactive Media

337

377

12%

MySpace

330

368

12%

All Other

7

9

29%

Craigslist.org

239

277

16%

Amazon Sites

139

149

7%

Facebook.com

103

107

4%

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. For more information, please visit www.comscore.com/boilerplate

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