LONDON, April 10 /PRNewswire/ --

- New Online Measurement Service Will Support the Growth of Online Video 
Advertising

- Google Sites Ranks as Most Popular Online Video Property in All 
Reported Countries

comScore, Inc. (Nasdaq: SCOR), a leader in measuring the digital world,
today announced the availability of comScore Video Metrix in four new
markets: the U.K., France, Germany and Canada. 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 now the first service of
its kind in each of these four new markets.

(Logo: http://www.newscom.com/cgi-bin/prnh/20080115/COMSCORELOGO)

"Recent years have seen an explosion in online video viewing, not just in
the U.S. but globally, representing a robust online advertising opportunity
for marketers," said Jack Flanagan, executive vice president of comScore.
"With comScore Video Metrix, marketers will be able to better plan
advertising to a highly-engaged, but often elusive audience, that typically
spends less time with traditional media."

Canada Shows Heavy Online Video Viewing Activity

Of the five countries currently reported by comScore Video Metrix, online
video had the highest reach in Canada, where 19 million viewers viewed a
video online in December, representing 89 percent of the total online
population age 15 and older. The U.K. was next with an 87 percent reach,
followed by France with an 84 percent reach and Germany with an 81 percent
reach. Penetration was slightly lower in the U.S., where online video reached
78 percent of the total online population.

Canada's online video audience also viewed more videos than any of the
other reported countries, averaging 112 videos per viewer for the month of
December, followed by the U.K. with 108 videos per viewer, Germany with 92
videos per viewer, and France with 89 videos per viewer. Again, U.S. activity
was slightly lower, averaging 77 videos per viewer in December.

Online Video Viewing Reach - Country by Country Breakdown(i) 
    Ranked by Percent Reach of Total Online Population, Age 15+(ii) 
    December 2007 
    comScore Video Metrix
                                                                    % Reach 
                          Total Unique                 Videos per    Online 
    Country               Viewers(000)  Videos(000)      Viewer    Population 
    Canada                  19,047       2,137,074        112          89% 
    U.K.                    28,686       3,092,867        108          87% 
    France                  24,063       2,138,802         89          84% 
    Germany                 27,321       2,514,039         92          81% 
    U.S.                   124,362       9,509,544         77          78%

(i) Excludes traffic from public computers such as Internet cafes or 
access from mobile phones or PDAs.

(ii) 2+ Universe available in U.S. and Canada, 15+ in U.K., France and
Germany. This report examines 15+ universes across all reportable countries
to provide a like for like comparison.

Google Sites Leads in All Reported Countries

Driven largely by video viewership at YouTube.com, Google Sites led as
the most popular online video destination in all reported countries. However,
beyond this there were strong performances from key local players, with BBC
Sites ranked second in the U.K., DailyMotion.com ranked second in France, and
Vivendi ranked second in Germany. Microsoft Sites was amongst the top 5
ranked video sites in the U.S., U.K. and Canada, but not in France and
Germany.

Top 5 Video Properties in all Reported Video Metrix Countries(i)       
    Ranked by Total Videos (000) Viewed by Unique Viewers, Age 15+ (ii)    
    December 2007                                                        
    comScore Video Metrix
                                                
    U.S.         Canada          U.K.            France          Germany  
    Google Sites Google Sites    Google Sites    Google Sites    Google Sites
    
    Fox                                                                  
    Interactive                                          
    Media        Microsoft Sites BBC Sites       DailyMotion.com Vivendi
  
                                                                 ProSiebenSat1     
    Yahoo! Sites CTVglobemedia   Microsoft Sites Groupe TF1      Sites 

    Viacom                                                               
    Digital      Yahoo! Sites    Yahoo! Sites    Amazon Sites    CLIPFISH.DE

                                 Fox                             Fox      
    Microsoft                    Interactive                     Interactive
    Sites        DAILYMOTION.COM Media           Yahoo! Sites    Media

(i)Excludes traffic from public computers such as Internet cafes or 
access from mobile phones or PDAs.

(ii)2+ Universe available in U.S. and Canada, 15+ in U.K., France and
Germany. This report examines 15+ universes across all reportable countries
to provide consistent comparisons.

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