Comscore Introduces New Service in U.K. to Provide Competitive Intelligence for Online Display Advertising Campaigns

Facebook Ranks as Top Display Ad Publisher and O2 Ranks as Top Advertiser in April, According to Comscore Ad Metrix

London, U.K. May 28, 2009 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today announced the U.K. launch of Comscore Ad Metrix, a breakthrough service in digital media campaign planning and buying that provides comprehensive insight into where display ads are viewed online and the demographic composition of the audiences reached. The service captures multiple varieties of display advertising, including static banners, rich media and video ads.

“Comscore Ad Metrix is the first online advertising measurement service in the U.K. to accurately account for the total number of display ads viewed online and attribute those views to the specific users exposed, as well as to the publishers displaying the ads and the advertisers responsible for their content,” said Mike Read, SVP and managing director, Comscore Europe. “Never before have the tools associated with traditional media measurement been so closely aligned with online accountability metrics, and we are delighted to be able to offer a range of capabilities through this service including share of voice, ad clutter, ad exposed unique visitors, frequency and reach of ads, GRPs and publisher-level demographics.”

Top 10 Online Display Ad Publishers

Facebook.com ranked as the top U.K. display ad publisher in April with 12.5 billion ad views (21.6 percent market share) reaching 22 million people online. Microsoft Sites ranked second with 3.8 billion ad views (6.5 percent), while eBay ranked third with 2.9 billion ad views (4.9 percent).

Top 10 U.K. Online Display Ad Publishers*Total U.K., Age 15+, Home & Work Locations**
April 2009
Source: Comscore Ad Metrix

Property

Total Display Ad Views (MM)

Share of Display Ads (%)

Advertising Exposed Unique Visitors (000)

Total Internet

58,105

100.0%

35,350

Facebook.com

12,532

21.6%

21,988

Microsoft Sites

3,758

6.5%

25,433

eBay

2,868

4.9%

17,720

AOL LLC

2,494

4.3%

13,827

Yahoo! Sites

2,011

3.5%

20,178

Google Sites

1,056

1.8%

24,904

Fox Interactive Media

825

1.4%

8,584

Autotrader.co.uk

693

1.2%

3,836

Tagged.com

438

0.8%

1,549

Amazon Sites

411

0.7%

12,199

*Reflects display advertising only, excludes small ads and house ads (<2,500 pixels in dimension).
**Excludes traffic from public computers such as Internet cafes or access from mobile phones or PDAs.

Top 10 Online Display Advertisers

The ranking of the top 10 display advertisers was led by telecom companies. With a significant digital advertising campaign promoting the availability of the iPhone 3G on contract, Telefonica O2 ranked as the top display advertiser in April 2009 with 1.1 billion ad views (1.9 percent market share) reaching 29.2 million people. Other top display advertisers included T-Mobile with 750 million ad views (1.3 percent share), dieting service Oneweek.co.uk with 610 million ad views (1.1 percent share) and Royal Mail Group.

Top 10 U.K. Online Display Advertisers*Total U.K., Age 15+, Home & Work Locations**
April 2009
Source: Comscore Ad Metrix

Property

Total Display Ad Views (000)

Share of Publisher Ad Views (%)

Advertising Exposed Unique Visitors (000)

Total Internet

58,104,615

100.0%

35,350

Telefonica O2

1,128,236

1.9%

29,231

T-Mobile

750,459

1.3%

28,715

Oneweek.co.uk

610,255

1.1%

25,150

Royal Mail Group

575,444

1.0%

12,190

Orange Sites

557,593

1.0%

26,483

Virgin Media

545,004

0.9%

26,984

Sky Sites

526,904

0.9%

25,849

British Telecommunications

394,958

0.7%

24,221

Microsoft Sites

379,732

0.7%

22,020

Camelot Group

321,979

0.6%

19,635

*Reflects display advertising only, excludes small ads and house ads (<2,500 pixels in dimension).
**Excludes traffic from public computers such as Internet cafes or access from mobile phones or PDAs.

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

Ayaan Mohamud
Comscore, Inc.
+ 44 (0) 207-099-1775
worldpress@comscore.com