Comscore Reports Top 10 U.K. Ad Networks

24/7 Real Media Growth Outpaces all Other Networks, Doubling Reach in Past Year

London, U.K., September 9, 2010 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today reported the top 10 ad networks based on their reach among U.K. internet users in July 2010. The ranking showed that Google Ad Network remains on top, with a reach of 38.3 million internet users, or 93 percent of the total U.K. internet audience, followed by AOL Advertising (33.2 million) and Yahoo! Network (33 million).

The fastest growing ad network among the top 10 was 24/7 Real Media (up 111 percent versus a year ago). Several other ad networks in the top ranking also achieved strong growth rates during the past year, including Tribal Fusion (up 30 percent), Adconion (up 28 percent) and ValueClick Media (up 25 percent).

U.K. Top 10 Ad Networks based on Unique Visitors*
July 2010 vs. July 2009
Total U.K., Age 15+ Home & Work Locations
Source: Comscore MMX

Total Unique Visitors (000)

% Reach

2009

2010

% Change

2009

2010

Pt Change

Total Internet Persons: 15+

36,912

38,301

3.8%

100.0

100.0

0.0

Google Ad Network

34,861

35,510

1.9%

94.4

92.7

-1.7

AOL Advertising

30,054

33,179

10.4%

81.4

86.6

5.2

Yahoo! Network

29,105

33,003

13.4%

78.8

86.2

7.3

Microsoft Media Network

32,584

32,554

-0.1%

88.3

85.0

-3.3

Specific Media

29,249

31,512

7.7%

79.2

82.3

3.0

24/7 Real Media

14,895

31,443

111.1%

40.4

82.1

41.7

ValueClick Media EU (vcmedia)

24,413

30,525

25.0%

66.1

79.7

13.6

Unanimis Network Aggregate

25,592

30,153

17.8%

69.3

78.7

9.4

Tribal Fusion

20,835

27,059

29.9%

56.4

70.6

14.2

Adconion Media Group

20,764

26,541

27.8%

56.3

69.3

13.0

*NOTE: Comscore’s ad network Unique Visitor measure represents the actual number of individuals reached by calls from the network’s ad servers

When evaluating daily visitors to the top ad networks, Google remains first on the list, reaching 17.6 million internet users. Microsoft Media Network rises up the ranks to take the second spot with 12.3 million users and AOL Advertising places in third (10.7 million).

U.K. Top 10 Ad Networks based on Average Daily Visitors
July 2010
Total U.K., Age 15+ Home & Work Locations
Source: Comscore MMX

Average Daily
Visitors (000)

Total Internet Persons: 15+

29,807

Google Ad Network

17,641

Microsoft Media Network

12,305

AOL Advertising

10,725

Yahoo! Network

10,528

Specific Media

8,174

24/7 Real Media

8,147

Unanimis Network Aggregate¹

7,555

ValueClick Media EU (vcmedia)

6,934

Tribal Fusion

5,154

Adconion Media Group

4,624

“Ad networks continue to be a powerful mechanism to quickly build scale, and nearly all of the major players have expanded their reach over the past year,” said Comscore senior vice president and European managing director Mike Read. “With continued innovations in targeting and focus on ROI it’s not surprising the ad network space continues to be of strong interest to advertisers.”

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.

Ayaan Mohamud
Comscore, Inc.
+ 44 (0) 203-111-1758
worldpress@comscore.com



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