27 Million People Watched More Than 3.5 Billion Videos Online in the U.K. in March 2008

YouTube.com Accounted for Nearly Half of All Videos Viewed Online

LONDON, U.K., June 25, 2008 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released data from the Comscore Video Metrix service, indicating that 27.4 million U.K. Internet users viewed 3.5 billion videos online in March 2008. Comscore Video Metrix, which was the first to market in the U.S. more than two years ago, has become the leading service for online video measurement and is the only service of its kind in the U.K.

Google Sites Ranks as Most Popular Online Video Viewing Property

Google Sites, driven by the popularity of YouTube.com (which accounted for 99 percent of all videos viewed on the property in March), attracted a 48-percent share of all online videos viewed in the U.K. BBC Sites ranked second with a 1.2-percent share, followed by Fox Interactive Media (0.9 percent share), Microsoft Sites (0.7 percent share), Yahoo! Sites (0.6 percent share), and French video sharing site, Dailymotion.com (0.4 percent share).

*Rankings based on video content sites; excludes video server networks. Online video includes both streaming and progressive download video.

**Excludes searches from public computers such as Internet cafes or access from mobile phones or PDAs.

U.K. Internet Users Watched 128 Videos per Viewer in March

27.4 million U.K. Internet users watched an average of 127.7 videos per viewer in March – the highest usage rate of any of the five Comscore Video Metrix countries (which also include the U.S., Canada, France and Germany). Google Sites attracted the most viewers (20.7 million), who watched an average of 81.1 videos per person. BBC Sites drew the second most viewers (6.3 million), followed by Fox Interactive Media (5.5 million), and Microsoft Sites (4.8 million).

*Rankings based on video content sites; excludes video server networks. Online video includes both streaming and progressive download video.

**Excludes searches from public computers such as Internet cafes or access from mobile phones or PDAs.

Other notable findings from March 2008 include:

• 81.2 percent of the total U.K. Internet audience viewed online video.
• The combined U.K. online video viewing audience watched a total 172 million hours of video content.
• 20.5 million viewers watched nearly 1.7 billion videos on YouTube.com (47.3 videos per viewer).
• The average online video duration was 3 minutes.

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

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