Yahoo! Sites Ranks as Top Display Ad Publisher in March with 43 Billion U.S. Ad Views, According to Comscore Ad Metrix

AT&T Ranks as Top Display Advertiser with 6 Billion Ad Views

RESTON, VA, May 12, 2009 – Comscore (NASDAQ: SCOR), a leader in measuring the digital world, today released March 2009 data from the Comscore Ad Metrix service, showing that Yahoo! Sites ranked as the top display ad publisher and AT&T ranked as the top display advertiser.

Top 10 Online Display Ad Publishers

Yahoo! Sites ranked as the top U.S. display ad publisher in March with 42.8 billion ad views (13.2 percent market share) reaching 139 million people online. Fox Interactive Media ranked second with 31.4 billion ad views (9.7 percent), while Facebook.com captured the third spot with 24.8 billion ad views (7.7 percent).

Top 10 Online Display Ad Publishers*
March 2009
Total U.S. – Home/Work/University Locations
Source: Comscore Ad Metrix

Total Display Ad Views (MM)

Share of Display Ads

Advertising Exposed Unique Visitors (000)

Total Internet

323,647

100.0%

184,002

Yahoo! Sites

42,847

13.2%

138,968

Fox Interactive Media

31,402

9.7%

82,527

Facebook.com

24,847

7.7%

52,931

Microsoft Sites

17,788

5.5%

89,135

AOL LLC

17,380

5.4%

91,272

Google Sites

4,235

1.3%

97,416

eBay

2,811

0.9%

47,991

Viacom Digital

2,367

0.7%

36,876

Glam Media

2,127

0.7%

37,237

CNN

1,984

0.6%

27,616

*Reflects display advertising only, both standard and non-standard IAB sizes; excludes house ads and small ads (<2,500 pixels in dimension)

Top 10 Online Display Advertisers

AT&T ranked as the top display advertiser in March with nearly 6 billion ad views (1.8 percent market share), which reached 147 million people online. A significant theme across AT&T’s display ad campaigns in March was the promotion of free camera phones, including the Sony Ericsson W350. Other top display advertisers included Verizon with 5.7 billion ad views (1.8 percent share), Vonage with 4.3 billion ad views (1.3 percent) and Scottrade with 4 billion ad views (1.2 percent).

Top 10 Online Display Advertisers*
March 2009
Total U.S. – Home/Work/University Locations
Source: Comscore Ad Metrix

Total Display Ad Views (MM)

Share of Publisher Ad Views

Advertising Exposed Unique Visitors (000)

Total Internet

323,647

100.0%

184,002

AT&T, Inc.

5,985

1.8%

147,133

Verizon

5,695

1.8%

144,482

Vonage

4,253

1.3%

139,786

Scottrade

3,983

1.2%

101,102

Experian Interactive

3,320

1.0%

140,480

Sprint Nextel Corporation

3,247

1.0%

129,035

Bank of America

3,152

1.0%

124,883

eBay

3,137

1.0%

140,089

Netflix.com

3,016

0.9%

134,059

Nextag.com

2,585

0.8%

126,943

*Reflects display advertising only, both standard and non-standard IAB sizes; excludes house ads and small ads (<2,500 pixels in dimension)

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

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