Comscore Releases April 2009 U.S. Ranking of Top 25 Ad Networks

AOL’s Platform-A Ranks #1 Among Ad Networks, Followed by Yahoo! Network and Google Ad Network

RESTON, VA, May 20, 2009 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world today reported the top 25 ad networks based on their reach among U.S. Internet users in April 2009. The ranking showed that AOL’s Platform-A remains the top ad network, reaching nearly 176.5 million U.S. Internet users, or 91.5 percent of the total audience, followed by Yahoo! Network (167.1 million) and Google Ad Network (164.5 million). New ad network FOX Audience Network ranked sixth, reaching 149.2 million people. Several ad networks in the top 25 achieved double-digit growth during the past year, led by Turn Inc. (up 121 percent), CPX Interactive (up 88 percent) and 24/7 Real Media (up 48 percent).

Top 25 Ad Networks
April 2009 vs. April 2008
Total U.S. – Home/Work/University Locations
Source: Comscore MMX

Total Unique Visitors (000)

Apr-2008

Apr-2009

% Change

Total Internet : Total Audience

190,728

192,875

1

Platform-A

170,508

176,455

3

Yahoo! Network

160,206

167,129

4

Google Ad Network

155,882

164,518

6

ValueClick Networks

140,930

160,307

14

Specific Media

144,773

158,012

9

FOX Audience Network

N/A

149,249

N/A

24/7 Real Media

99,959

147,668

48

Traffic Marketplace

114,682

143,519

25

Microsoft Media Network US

119,595

139,674

17

Tribal Fusion

135,113

138,274

2

Casale Media - MediaNet

127,184

137,884

8

interCLICK

107,961

134,834

25

Turn, Inc

60,617

134,028

121

Adconion Media Group

117,965

133,498

13

CPX Interactive

69,178

130,370

88

Collective Network by Collective Media

88,279

129,808

47

ADSDAQ by ContextWeb

93,815

123,534

32

AudienceScience (formerly Revenue Science)

N/A

121,001

N/A

Burst Media

89,670

116,727

30

Undertone Networks

72,940

97,053

33

AdBrite

81,838

91,033

11

Pulse 360

N/A

82,574

N/A

Vibrant Media

72,351

80,779

12

Adify

N/A

73,467

N/A

Kontera

52,159

72,870

40

“Underscoring the growing importance of ad networks to the digital advertising economy, each of the top 25 ad networks has expanded its reach during the past year,” commented Jack Flanagan, Comscore executive vice president. “It almost seems that new ad networks are emerging every day, each aimed at helping advertisers achieve their campaign objectives, whether it’s to deliver reach and frequency or to target a specific audience segment.”

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

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