Comscore Networks Announces Partnership with Catalina Health Resource

Offers the Ability to Cost-Effectively Gauge Opinions and Attitudes of Low Incidence Patient Segments

RESTON, VA, January 30, 2006 – Comscore Networks today announced that it has partnered with Catalina Health Resource to offer clients its Behavior Activated Research® (BAR Rx) solution for pharmaceutical drug products. Catalina Health Resource is a division of Catalina Marketing Corporation (NYSE: POS), the global leader in behavior-based marketing solutions. The partnership is designed to offer marketers increased insight into consumer behavior, and will leverage the reach of the Catalina Health Resource retail pharmacy network, which encompasses more than 12,600 pharmacies nationwide that dispense approximately one in every three prescriptions filled in the U.S., representing over one billion prescriptions annually.

“BAR® Rx will allow us to precisely pre-qualify and reach potential market research participants based on the specific drug therapy they take and deliver a personalized survey invitation via the Catalina Health Resource retail pharmacy network – all while preserving patient privacy,” said Gian Fulgoni, chairman of Comscore Networks. “We are excited to be offering such an innovative product that provides the pharmaceutical industry with the ability to cost-effectively communicate with even the lowest incidence patient segments and to obtain accurate information regarding their opinions and attitudes, health condition and medical treatment. Finally, the industry will have an efficient way to research and address compliance and persistency issues.”

Comscore is one of the country’s leading market research suppliers, providing syndicated and customized market research services to more than 500 clients, including leading pharmaceutical companies and many of the world’s most sophisticated manufacturers and retailers.

"Catalina Health Resource’s partnership with Comscore Networks will help strengthen our PATIENTLink™ targeted media,” said Craig H. Scott, president of Catalina Health Resource. "We look forward to providing the pharmaceutical industry with a more enhanced understanding of patient needs.”

About Comscore Networks

Comscore Networks provides unparalleled insight into consumer behavior and attitudes. This capability is based on a massive, global cross-section of more than 2 million consumers who have given Comscore explicit 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 consultants 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 global leaders such as AOL, Microsoft, Yahoo!, Verizon, Best Buy, The Newspaper Association of America, Tribune Interactive, ESPN, Nestlé, MBNA, UniversalMcCann, the United States Postal Service, Merck and Orbitz. For more information, please visit www.comscore.com.

About Catalina Marketing Corporation and Catalina Health Resource

Based in St. Petersburg, FL, Catalina Marketing Corporation (www.catalinamarketing.com) and its healthcare division, Catalina Health Resource, are leading providers of communications and targeted media based on de-identified purchase and prescription histories. This provides healthcare and other companies the ability to conduct educational programs that provide patients and consumers with relevant, meaningful information. Catalina Health Resource offers an array of direct-to-patient and direct-to-consumer information vehicles that allow individuals and families to make more informed decisions about their healthcare. The company’s products are fully compliant with the important privacy protection requirements found in the Health Insurance Portability and Accountability Act of 1996 (HIPAA).

Certain statements in the preceding paragraphs are forward-looking, and actual results may differ materially. Statements not based on historic facts involve risks and uncertainties, including, but not limited to, the changing market for promotional activities, especially as it relates to policies and programs of packaged goods and pharmaceutical manufacturers and retailers, government and regulatory statutes, rules, regulations and policies, the effect of economic and competitive conditions and seasonal variations, actual promotional activities and programs with the company's customers, the pace of installation of the company's store network, the success of new services and businesses and the pace of their implementation, the company's ability to maintain favorable client relationships, the outcome and impact of an ongoing SEC investigation into certain of the company's prior fiscal years, and the outcome and impact of the pending shareholder class action and derivative lawsuits.

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