Comscore Releases September U.S. Search Engine Rankings

RESTON, VA, October 18, 2007 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly Comscore qSearch analysis of the search marketplace. Among core search engines in September 2007, Google Sites remained the top search property with more than 5.3 billion core searches conducted, representing a 57 percent share of the search market. Along with Google, both Yahoo! Sites and Ask Network posted share gains during the month.

September U.S. Core Search Rankings

In September, Google Sites maintained its position atop the core search rankings with 57 percent of U.S. searches, gaining a half share point versus the previous month. Yahoo! Sites ranked second with 23.7 percent, followed by Microsoft Sites (10.3 percent), Ask Network (4.7 percent) and Time Warner Network (4.3 percent).

Comscore Core Search Report*
September 2007
Total U.S. – Home/Work/University Locations
Source: Comscore qSearch 2.0

Core Search Entity

Share of Searches (%)

Aug - 07

Sep -07

Point Change Sep-07 vs. Aug-07

Total Core Search

100.0%

100.0%

0.0

Google Sites

56.5%

57.0%

0.5

Yahoo! Sites

23.3%

23.7%

0.4

Microsoft Sites

11.3%

10.3%

-1.0

Ask Network

4.5%

4.7%

0.2

Time Warner Network

4.5%

4.3%

-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.

In September, Americans conducted 9.4 billion searches at the core search engines, marking a 4-percent decline versus August. September tends to be a softer month for search activity due to it being a 30-day month with a long holiday weekend. More than 5.3 billion core searches were conducted at Google Sites during the month, while Yahoo! Sites recorded 2.2 billion.

Comscore Core Search Report*
September 2007
Total U.S. – Home/Work/University Locations
Source: Comscore qSearch 2.0

Core Search Entity

Search Queries (MM)

Aug-07

Sep-07

Percent Change Sep-07 vs. Aug-07

Total Core Search

9,820

9,400

-4.3%

Google Sites

5,545

5,356

-3.4%

Yahoo! Sites

2,290

2,227

-2.7%

Microsoft Sites

1,106

969

-12.4%

Ask Network

438

444

1.2%

Time Warner Network

441

405

-8.2%

* 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.

September U.S. Expanded Search Rankings

In the September 2007 analysis of the Top 50 properties worldwide where search activity is observed, Google Sites led the pack with 6.6 billion searches. Yahoo! Sites ranked second with nearly 2.4 billion searches, followed by Microsoft Sites (999 million), Time Warner Network (843 million) and Fox Interactive Media (492 million). Despite the decline in overall search activity in September, Ask.com saw a 10-percent gain versus August.

Comscore Expanded Search Query Report
September 2007
Total U.S. – Home/Work/University Locations
Source: Comscore qSearch 2.0

Expanded Search Entity

Search Queries (MM)

Aug-07

Sep-07

Percent Change Sep-07 vs. Aug-07

Total Expanded Search

13,703

13,018

-5.0%

Google Sites

6,809

6,593

-3.2%

Google

5,602

5,388

-3.8%

YouTube/All Other

1,207

1,205

-0.2%

Yahoo! Sites

2,473

2,381

-3.7%

Yahoo!

2,438

2,346

-3.8%

All Other

35

35

0.0%

Microsoft Sites

1,144

999

-12.7%

MSN-Windows Live

1,111

966

-13.1%

Microsoft/All Other

33

33

0.0%

Time Warner Network

937

843

-10.0%

AOL

438

397

-9.4%

Mapquest/All Other

499

446

-10.6%

Fox Interactive Media

571

492

-13.8%

MySpace

560

483

-13.8%

All Other

11

9

-18.2%

eBay

457

445

-2.6%

Ask Network

439

445

1.4%

Ask.com

205

226

10.2%

MyWebSearch.com/ All Other

234

219

-6.4%

CRAIGSLIST.ORG

199

197

-1.0%

Amazon Sites

154

138

-10.4%

Comcast Corporation

73

65

-11.0%

For 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. This capability is based on a massive, global cross-section of more than 2 million consumers who have given Comscore permission to confidentially capture their browsing and transaction behavior, including online and offline purchasing. Comscore panelists also participate in survey research that captures and integrates their attitudes and intentions. Through its proprietary technology, Comscore measures what matters across a broad spectrum of behavior and attitudes. Comscore analysts apply this deep knowledge of customers and competitors to help clients design powerful marketing strategies and tactics that deliver superior ROI. Comscore services are used by more than 700 clients, including global leaders such as AOL, Microsoft, Yahoo!, BBC, Carat, Cyworld, Deutsche Bank, France Telecom, Best Buy, The Newspaper Association of America, Financial Times, ESPN, Fox Sports, Nestlé, Starcom, Universal McCann, the United States Postal Service, Verizon, ViaMichelin, Merck and Expedia. For more information, please visit www.comscore.com.

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

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