AOL still top ad network, says ComScore
15 Jan 2010
Media research firm ComScore just reported the top 15 ad networks based on their reach among U.S. Internet users in December 2009.
AOL Advertising remains the top ad network, reaching 187 million U.S. Internet users, or 91 percent of the total audience. Yahoo Network placed second with an audience of 180.9 million. Google Ad Network, reaching 178.1 million came in third.