comScore Wins Internet Audience Measurement Tender in the Czech Republic

LONDON, May 13, 2011 - comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world,
today announced that it has been awarded a three-year contract by the Czech
Association for Internet Advertising (SPIR) to be the official source of
record for Internet Audience Measurement for both online and mobile media.

(Logo: photos.prnewswire.com/prnh/20080115/COMSCORELOGO)

"One of the key criteria in choosing comScore as the official currency
was their international measurement expertise and flexibility in addressing
our local requirements. Furthermore the quality of comScore's analytical
tools and their experience in inclusion of new technologies into the
measurement placed comScore well above any other supplier in the tender
process," says Jan Simkanic, chairman of the SPIR Executive Board.

"We are very pleased to be selected by SPIR in the Czech Republic and it
is as a reflection of our commitment to providing local solutions that will
build the online advertising ecosystem in Central Europe," said Wolf Allisat,
Executive Vice President and General Manager, International at comScore. "We
look forward to delivering mission critical insights and competitive
intelligence not only for the burgeoning digital media industry in the Czech
Republic, but also to our international clients at large who want a deeper
understanding of the Czech consumer."

comScore expects to deliver inaugural data for the Czech market in early
2012. The new NetMonitor wave will last for three years and the core services
of the internet audience measurement will include socio-demographic profiles,
measurement of online video viewing behaviour and insights into the mobile
internet market.

About comScore

comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital
world and preferred source of digital business analytics. For more
information, please visit www.comscore.com/companyinfo.

About SPIR

SPIR is a professional association engaged in the area of internet
advertising since the year 2000. At the present time the membership base
consists of 63 members. In addition to conducting individual, widely
respected research of visitation and the socio-demographic profile of
internet visitors through NetMonitor, it is also conducting the AdMonitoring
project of internet advertising, the professional internet marketing
conference IAC, provides expert analyses of the development of the internet
market, and is a self-regulator of audiovisual content. www.spir.cz

Berit Block of comScore, Inc., +44 (203) 111 1758, worldpress at comscore.com