If you wish to serve as lead plaintiff, you must move the Court no later than 60 days from today. If you wish to discuss this action or have any questions concerning this notice or your rights or interests, please contact plaintiff’s counsel, Samuel H. Rudman or David A. Rosenfeld of Coughlin Stoia at 800/449-4900 or 619/231-1058, or via e-mail at djr@csgrr.com. If you are a member of this class, you can view a copy of the complaint as filed or join this class action online at http://www.csgrr.com/cases/arbitron/. Any member of the purported class may move the Court to serve as lead plaintiff through counsel of their choice, or may choose to do nothing and remain an absent class member.

The complaint charges Arbitron and certain of its officers and directors with violations of the Securities Exchange Act of 1934. The Company, through its subsidiaries, provides media and marketing information services in the United States and internationally. The Company's Portable People Meter ratings service is purportedly capable of measuring radio, broadcast television, cable television, Internet broadcasts, satellite radio and television audiences, and retail store video and audio broadcasts.

The complaint alleges that, during the Class Period, defendants issued materially false and misleading statements that misrepresented and failed to disclose: (i) that the Company's scheduled implementation of its Portable People Meter ratings service in certain major markets was not performing according to internal expectations and the Company was experiencing significant difficulties such that it would have to delay its implementation; and (ii) as a result, defendants lacked a reasonable basis for their positive statements about the timing of the implementation of Arbitron’s Portable People Meter ratings service and the Company's prospects and future earnings.

On November 26, 2007, Arbitron announced that "it [would] delay the commercialization of its Portable People Meter (PPM) radio ratings service in nine markets" and that the Company would be revising its financial guidance for 2007 and its outlook for 2008. In response to this announcement, the price of Arbitron common stock declined $7.21 per share, or over 14.74%, to close at $41.70 per share, on unusually high trading volume.

Plaintiff seeks to recover damages on behalf of all purchasers of Arbitron common stock during the Class Period (the “Class”). The plaintiff is represented by Coughlin Stoia, which has expertise in prosecuting investor class actions and extensive experience in actions involving financial fraud.

Coughlin Stoia, a 190-lawyer firm with offices in San Diego, San Francisco, Los Angeles, New York, Boca Raton, Washington, D.C., Philadelphia and Atlanta, is active in major litigations pending in federal and state courts throughout the United States and has taken a leading role in many important actions on behalf of defrauded investors, consumers, and companies, as well as victims of human rights violations. The Coughlin Stoia Web site (http://www.csgrr.com) has more information about the firm.