Comscore Releases Top Japanese Web Rankings for October

News Sites See Growth Amid Payoff Scandal
Baseball and Boxing Championships Drive Traffic to Sports Sites

Tokyo, Japan, November 28, 2007 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its October rankings of the most visited and fastest growing Internet properties in Japan based on data from its Comscore World Metrix service. In October, nearly 54 million Japanese accessed the Internet, with Yahoo! Sites maintaining its position as the most-visited property.

Top 10 Properties for October
Yahoo! Sites remained the top-ranked property in Japan with 41.3 million visitors, followed by Google Sites with 31.7 million visitors and Microsoft Sites with 29.4 million visitors.

“Yahoo! maintains its hold on the Japanese Internet market,” said Maru Sato, Managing Director of Comscore Japan. “Their sites reach nearly 77 percent of the total Internet audience in Japan.”

*Ranking based on the top 100 Japanese properties in October 2007.
** Excludes traffic from public computers such as Internet cafes or access from mobile phones or PDAs.

Top-Gaining Properties for October
Propelled by interest in the Ministry of Defense payoff scandal, news sites IZA.ne.jp and JIJI.com both experienced increases in traffic as people sought the latest developments in the story. IZA.ne.jp experienced a 60-percent gain to 8.6 million visitors, making it the top-gaining property for the month, while JIJI.com increased 57 percent to nearly 3 million visitors.

In October, several sports events caused both Nikkansports.com and Sponichi.co.jp to experience an increase in visitation. Driven by Japan’s Daisuke Matsuzaka pitching for the Boston Red Sox in the Major League Baseball World Series, Japan Professional Baseball’s Japan Series and controversy surrounding the Boxing Flyweight World Championship match, Nikkansports.com grew 35 percent to 4.1 million visitors while Sponichi.co.jp rose 12 percent to nearly 2.7 million visitors.

*Ranking based on the top 100 Japanese properties in October 2007.
** Excludes traffic from public computers such as Internet cafes or access from mobile phones or PDAs.

About Comscore
Comscore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world. This capability is based on a massive, global cross-section of more than 2 million consumers 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 captures and integrates their attitudes and intentions. Through its proprietary technology, Comscore measures what matters across a broad spectrum of behavior and attitudes. Comscore analysts apply this deep knowledge of customers and competitors to help clients design powerful marketing strategies and tactics that deliver superior ROI. Comscore services are used by more than 800 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, Nestlé, Starcom, Universal McCann, the United States Postal Service, Verizon, ViaMichelin, Merck and Expedia. For more information, please visit www.comscore.com

Contact:
Sarah Radwanick
Director, Regional Product Marketing
Comscore, Inc.
+44 (0) 20 7099 1784
worldpress@comscore.com