Comscore Announces Fourth-Quarter and Full Year 2008 Conference Call Details

Reston, VA – January 23, 2009Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today announced it will report its fourth-quarter and full year 2008 financial results after U.S. financial markets close on Wednesday, February, 11, 2009. In conjunction with this announcement, a conference call will be hosted by Dr. Magid Abraham, president and chief executive officer, and John Green, chief financial officer, on Wednesday, February 11, 2009, at 5:00 p.m. (ET) to discuss the Company’s financial results.

To access this call, dial 888-713-4209 (domestic) or 617-213-4863 (international). The pass code for the call is 74553746. Investors are advised to dial in at least ten minutes prior to the call to register. In order to bypass the operator upon connection, participants may pre-register for the conference call at: https://www.theconferencingservice.com/prereg/key.process?key=PDTLBPPNU. Pre-registrants will be issued a pin number to use for quick access to the live call. Additionally, a live webcast of the conference call will be available on the “Investor Relations” page on the Company’s Web site www.comscore.com.

Following the conference call, a replay will be available at 888-286-8010 (domestic) or 617-801-6888 (international). The replay pass code for this call is 23975880. An archived webcast of this conference call will also be available at http://ir.comscore.com/events.cfm. The replay conference call and webcast will be available until February 25, 2009.

About Comscore:
Comscore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. In an independent survey of 800 of the most influential publishers, advertising agencies and advertisers conducted by William Blair & Company in July 2008, Comscore was rated the 'most preferred online audience measurement service' by 54% of respondents, a full 20 points ahead of its nearest competitor. Comscore's capabilities are based on a massive, global cross-section of approximately 2 million Internet users who have given Comscore permission to confidentially capture their browsing and transaction behavior, including online and offline purchasing. Comscore panelists also participate in survey research that gathers and integrates their attitudes and intentions. Using its proprietary technology, Comscore measures what matters across a broad spectrum of digital behavior and attitudes, helping clients design more powerful marketing strategies that deliver superior ROI. With its recent acquisition of M:Metrics, Comscore is also a leading source of data on mobile usage. Comscore services are used by more than 1,100 clients, including global leaders such as AOL, Microsoft, Yahoo!, BBC, Carat, Cyworld, Deutsche Bank, France Telecom, Best Buy, The Newspaper Association of America, Financial Times, ESPN, Fox Sports, Nestle, Starcom, Universal McCann, the United States Postal Service, the University of Chicago, Verizon Services Group and ViaMichelin. For more information, please visit http://www.comscore.com.

Press
Bill Daddi
Daddi Brand Communications
646-370-1341
press@comscore.com