Media Advisory: Microsoft Bids on Yahoo!

RESTON, VA, February 5, 2008 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released figures in support of the continuing coverage of Microsoft’s recent announcement to bid on Yahoo!, relevant Comscore figures are provided below.

  • Google Sites saw nearly 588 million visitors worldwide in December 2007, more than both Microsoft Sites and Yahoo! Sites individually, but less than the combined audience of Microsoft and Yahoo!, which would reach 665 million worldwide visitors.
  • In search share, Google Sites lead both the U.S. (58.4 percent share), and worldwide (62.4 percent share). Microsoft/Yahoo! combined would have a 32.7 percent U.S. search share, and a 15.7 percent share worldwide.
  • In the email category, Yahoo! mail leads both in the U.S. (82 million visitors) and worldwide (257 million visitors). A Microsoft/Yahoo! combined instant messenger audience of 298 million would reach nearly 77 percent of the instant messenger audience worldwide.

Properties
December 2007
Total – Home/Work/University Locations
Source: Comscore MMX

Total Unique Visitors (000)

U.S.

Worldwide*

Total Internet: Total Audience

183,619

815,797

Google Sites

132,954

587,806

Microsoft/Yahoo! Combined

163,581

664,819

Microsoft Sites

120,034

540,285

Yahoo! Sites

136,634

484,674

*Worldwide data reported for people age 15+ at world home/work locations

Comscore Search Report
December 2007
Total – Home/Work/University Locations
Source: Comscore qSearch

Share of Searches

U.S.*

Worldwide**

Total Internet: Total Audience

100.0%

100.0%

Google Sites

58.4%

62.4%

Microsoft/Yahoo! Combined

32.7%

15.7%

Microsoft Sites

9.8%

2.9%

Yahoo! Sites

22.9%

12.8%

*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.

**Based on the top 50 properties worldwide. Worldwide data reported for people age 15+ at world home/work locations

Share of Display Ads
November 2007
Total U.S. – Home/Work/University Locations
Source: Comscore Ad Metrix

Share of Display Ad Views

U.S.

Total Internet: Total Audience

100.0%

Google Sites

1.0%

Microsoft/Yahoo! Combined

25.5%

Microsoft Sites

6.7%

Yahoo! Sites

18.8%

e-mail (web-based)
December 2007
Total – Home/Work/University Locations
Source: Comscore MMX

Total Unique Visitors (000)

U.S.

Worldwide*

Total Internet: Total Audience

183,619

815,797

e-mail

142,428

564,196

Google Gmail

20,785

90,040

Microsoft/Yahoo! Combined

106,762

426,335

Windows Live Hotmail

45,716

254,995

Yahoo! Mail

82,485

256,607

*Worldwide data reported for people age 15+ at world home/work locations

Instant Messengers
December 2007
Total – Home/Work/University Locations
Source: Comscore MMX

Total Unique Visitors (000)

U.S.

Worldwide*

Total Internet: Total Audience

183,619

815,797

Instant Messengers

71,434

385,349

Google Talk (App)

530

4,385

Microsoft/Yahoo! Combined

41,160

297,832

MSN-Windows Live Messenger

18,402

227,713

Yahoo! Messenger

27,387

93,006

*Worldwide data reported for people age 15+ at world home/work locations

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

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