Comscore Releases May 2008 U.S. Search Engine Rankings

RESTON, VA, June 19, 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 May 2008, Americans conducted 10.8 billion core searches, with Google Sites increasing its market share slightly.

May 2008 U.S. Core Search Rankings

In May, Google Sites’ share of core searches reached 61.8 percent, up from 61.6 percent the previous month. Yahoo! Sites ranked second with a 20.6 percent share (up from 20.4 percent the prior month), followed by Microsoft Sites (8.5 percent), AOL LLC (4.5 percent), and Ask Network (4.5 percent).

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

Core Search Entity

Share of Searches (%)

Apr-08

May-08

Point Change

May-08 vs. Apr-08

Total Core Search

100.0%

100.0%

N/A

Google Sites

61.6%

61.8%

0.2

Yahoo! Sites

20.4%

20.6%

0.2

Microsoft Sites

9.1%

8.5%

-0.6

AOL LLC

4.6%

4.5%

-0.1

Ask Network

4.3%

4.5%

0.2

* 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 2-percent increase versus April. Google Sites handled nearly 6.7 billion core searches, followed by Yahoo! Sites with 2.2 billion, and Microsoft Sites with 920 million.

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

Core Search Entity

Search Queries (MM)

Apr-08

May-08

Percent Change

May-08 vs. Apr-08

Total Core Search

10,582

10,777

2%

Google Sites

6,514

6,664

2%

Yahoo! Sites

2,159

2,221

3%

Microsoft Sites

961

920

-4%

AOL LLC

491

486

-1%

Ask Network

458

486

6%

* 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.

May U.S. Expanded Search Rankings

In Comscore’s May 2008 analysis of the Top 50 properties where search activity is observed, Google Sites led with 8.8 billion searches. Yahoo! Sites ranked second with 2.4 billion searches, followed by Microsoft Sites (963 million), and AOL LLC (831 million).

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

Expanded Search Entity

Search Queries (MM)

Apr-08

May-08

Percent Change

May-08 vs. Apr-08

Total Expanded Search

14,988

15,463

3%

Google Sites

8,467

8,838

4%

Google

6,639

6,814

3%

YouTube/All Other

1,828

2,024

11%

Yahoo! Sites

2,323

2,387

3%

Yahoo!

2,290

2,352

3%

All Other

33

35

6%

Microsoft Sites

1,000

963

-4%

MSN-Windows Live

964

932

-3%

Microsoft/All Other

36

31

-14%

AOL LLC

839

831

-1%

AOL Search Network

459

456

-1%

MapQuest/All Other

380

375

-1%

Ask Network

461

489

6%

Ask.com

298

321

8%

MyWebSearch.com/ All Other

163

168

3%

eBay

450

449

0%

Fox Interactive Media

360

402

12%

MySpace

354

395

12%

All Other

6

7

17%

Craigslist.org

273

314

15%

Amazon Sites

137

141

3%

Facebook.com

112

121

8%

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