LONDON, June 25 /PRNewswire/ --

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

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.

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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).

Top U.K. Online Video Properties* Ranked by Videos Viewed March 2008 Total U.K. - Age 15+, Home & Work Locations** Source: comScore Video Metrix Share (%) Property Videos (000) of Videos Total Internet 3,500,627 100.0 Google Sites 1,681,887 48.0 BBC Sites 42,417 1.2 Fox Interactive Media 29,748 0.9 Microsoft Sites 25,287 0.7 Yahoo! Sites 19,975 0.6 DAILYMOTION.COM 15,590 0.4 VEOH.COM 15,070 0.4 Disney Online 13,893 0.4 Viacom Digital 13,528 0.4 Metacafe 13,090 0.4 * 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).

Top U.K. Online Video Properties* Ranked by Total Unique Viewers March 2008 Total U.K. - Age 15+, Home & Work Locations** Source: comScore Video Metrix Total Unique Average Videos Property Viewers (000) per Viewer Total Internet 27,406 127.7 Google Sites 20,727 81.1 BBC Sites 6,318 6.7 Fox Interactive Media 5,450 5.5 Microsoft Sites 4,821 5.2 Yahoo! Sites 3,720 5.4 Viacom Digital 2,272 6.0 DAILYMOTION.COM 1,773 8.8 Disney Online 1,603 8.7 FACEBOOK.COM 1,560 3.3 Metacafe 1,556 8.4 * 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 http://www.comscore.com/boilerplate

Web site: http://www.comscore.com

Jamie Gavin of comScore, Inc., +44-0-207-099-1775, worldpress@comscore.com /Photo: NewsCom: http://www.newscom.com/cgi-bin/prnh/20080115/COMSCORELOGO, AP Archive: http://photoarchive.ap.org, PRN Photo Desk, photodesk@prnewswire.com