comScore Acquires Nedstat, Global Analytics and Online Optimization Provider

Acquisition Adds New Products and Capabilities to 'Unified Digital Measurement' Platform

RESTON, Virginia, September 1, 2010 - comScore, Inc. (Nasdaq: SCOR), a leader in measuring the digital world,
today announced that it has acquired Nedstat, a leading provider of web
analytics and innovative video measurement solutions for approximately
US$36.7 million. Headquartered in Amsterdam, the Netherlands, Nedstat offers
world class technology that helps organizations optimize customer experiences
and maximize the return on digital media investments. With the Nedstat
technology installed on thousands of sites, the acquisition helps comScore
accelerate its global expansion strategy, particularly in European markets,
and strengthens comScore's Unified Digital Measurement(TM) (UDM) platform,
which combines panel-based audience measurement with census-level data
collection to provide a holistic view of digital consumer behavior.

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

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

"The acquisition of Nedstat is another important step towards fulfilling
our vision of making the Unified Digital Measurement platform the global
standard for digital measurement," said Dr. Magid Abraham, comScore President
& CEO. "In addition, our clients are asking for a new class of business
applications to maximize the monetization of their audiences using the UDM
data we already collect. The Nedstat platform helps us deliver substantial
additional value to clients, expand existing customer relationships, and
broaden the scope of our addressable market by adding new and unique digital
business analytics to comScore's offerings. Nedstat clients have benefited
over the years from the platform's detailed and flexible analytical tools and
elegant user-experience. We are committed to using Nedstat's technology to
develop new applications, greater scalability, a more expansive data set, and
a unified and consistent view of audience statistics, all of which we think
will help generate actionable insights that can lead to improved business
results for customers."

"We are excited to join forces with comScore, a recognized global leader
in digital measurement," said Michael Kinsbergen, CEO of Nedstat. "comScore's
'Unified Digital Measurement' platform presents a compelling vision of the
future of digital measurement, and we are eager to play a vital role in
helping to make that vision a reality. We believe that Nedstat web analytics
can add substantial value for clients when combined with the existing
comScore measurement platform."

Upon the acquisition, Nedstat became a wholly owned subsidiary of
comScore. Mr. Kinsbergen will be helping in the transition and will continue
to be involved by joining comScore's advisory board. In addition, Fred
Appelman, Nedstat's Chief Technology Officer, and Michiel Berger, Nedstat's
co-founder and Chief Innovations Officer, will join comScore in senior
strategy and technology roles.

comScore believes that the Nedstat acquisition will contribute
approximately US$4 million of additional revenue for the remainder of 2010.
comScore anticipates that due to transaction-related expenses and
transaction-related accounting adjustments the transaction will be dilutive
to 2010 GAAP and non-GAAP net income, but accretive to quarterly GAAP and
non-GAAP net income within the first half of 2011.

Clients Voice Support

"With today's fast paced and complex digital media landscape, it is
crucial for an International media group like Eurosport to have a global
source of digital market intelligence providing analytics, audience
measurement, insight into consumer behavior and socio-demographic
characteristics on Internet, online video, mobile and tablet usage. Joining
Nedstat's analytic solution with comScore's Unified Digital Measurement
platform is a very positive development. The benefit for Eurosport of having
one single service provider will be twofold: we will have all the information
we need about consumer behaviour on our digital platforms and at the same
time the analytics needed to optimize the performance of our clients'
advertising campaigns."

- Pierre-Emmanuel Ferrand, Head of Programmes Marketing and Research,
Eurosport

"Sound data and analytics are the lifeblood of any digital business and
we support any efforts in our industry to bring the various data sets into
greater harmony. This will enable us to have greater confidence in the data
and make better business decisions in a more timely and efficient manner."

- Roberto Massiff, VP of Sales, Grupo El Mercurio

comScore to Discuss Acquisition in Conference Call

comScore management will discuss today's announcement in a conference
call today, Wednesday, September 1, 2010, at 8:00 AM ET (14:00 CEST). The
conference call and replay can be accessed by telephone and webcast as
follows:

    Call-in Number: 866.314.4865, Passcode 95213991
    (International) +1-617.213.8050, Passcode 95213991

    Replay Number: 888-286-8010, Passcode 91044502
    (International) +1-617-801-6888, Passcode 91044502

    Webcast (live and replay): ir.comscore.com/events.cfm

About Nedstat

Nedstat is a leading provider of web analytics and innovative solutions
for online business optimization. Its flagship product is Sitestat(TM), which
empowers marketers to optimize customer interactions and improve conversion
by making online experiences more personalized and relevant. Its Stream
Sense(TM) product is a frontrunner in video analytics. The Nedstat products
and services help marketers improve the effectiveness and profitability of
online marketing programs and optimize customer experiences and marketing
spend. The customer list includes many renowned and internationally operating
companies such as Electrabel, Europcar, London Stock Exchange, Panasonic,
Renault, Repsol and Wolters Kluwer and many public and commercial television
organizations throughout Europe such as Eurosport, France Televisions, ITV,
NOS, NRK, RTL, SVT and VRT. Key accreditations by Europe's leading
independent web standards organizations such as ABC electronic, OJD, KIA and
Audiweb ensure that metrics are in full compliance with leading industry
standards. Nedstat was founded in 1996 and employs 125 people with offices in
Amsterdam (HQ), Antwerp, Frankfurt, London, Madrid, Paris and Stockholm.
Local people staff all offices, and the Nedstat products, documentation,
consultancy and training are offered in local languages.

About comScore

comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital
world and preferred source of digital marketing intelligence. comScore helps
its clients better understand, leverage and profit from the rapidly evolving
digital marketing landscape by providing solutions in the measurement and
evaluation of online audiences, advertising effectiveness, social media,
search, video, mobile, e-commerce, and a broad variety of other emerging
forms of digital behavior. comScore's capabilities are based on a global
panel of approximately 2 million Internet users who have given comScore
explicit permission to confidentially capture their browsing and purchase
behavior. These data can also be combined with census-level Web site or
telecom carrier data to provide the most comprehensive and unified
measurement of digital activity. comScore's recent acquisition of ARSgroup
adds one of the industry's most validated measurement of the persuasive power
of advertising in TV and multi-media campaigns. comScore services are used by
more than 1,400 clients around the world, including global leaders such as
AOL, Baidu, BBC, Best Buy, Carat, Deutsche Bank, ESPN, Facebook, France
Telecom, Financial Times, Fox, Microsoft, MediaCorp, Nestle, Starcom, Terra
Networks, Universal McCann, Verizon Services Group, ViaMichelin and Yahoo!.
For more information, please visit www.comScore.com.

Cautionary Note Regarding Forward-Looking Statements

This release contains forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934, including, but not limited to, comScore's expectations
regarding the impact and benefits of the acquisition of Nedstat, financial or
otherwise; comScore's expectations regarding the growth, opportunities and
favorability of the market for mobile enterprise and marketing products; and
comScore's expectations as to the integration of Nedstat's products and
customer base with its existing products. These statements involve risks and
uncertainties that could cause actual results to differ materially,
including, but not limited to: the impact of integrating Nedstat's business
and products into comScore's business and products; the possibility that the
web analytics market does not grow and develop as expected; comScore's
ability to retain customers of Nedstat; the risk of integration difficulties
with Nedstat; comScore's ability to grow its existing customer base and
develop new products; the expected strength of comScore's business and client
demand for comScore's products; the future quality of client relationships
and resulting renewal rates; expectations of customer growth; and
expectations of sales growth.

For a detailed discussion of these and other risk factors, please refer
to comScore's Quarterly Report on Form 10-Q for the period ended June 30,
2010, Annual Report on Form 10-K for the period ended December 31, 2009 and
from time to time other filings with the Securities and Exchange Commission
(the "SEC"), which are available on the SEC's Web site (www.sec.gov).

Stockholders of comScore are cautioned not to place undue reliance on our
forward-looking statements, which speak only as of the date such statements
are made. comScore does not undertake any obligation to publicly update any
forward-looking statements to reflect events, circumstances or new
information after the date of this press release, or to reflect the
occurrence of unanticipated events.

Andrew Lipsman of comScore, Inc., +1-312-775-6510, press at comscore.com