
COMSCORE - Jan 15 - comScore 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 187M U.S. Internet users, or 91%
of the total audience, followed by Yahoo! Network (180.9M) and Google
Ad Network (178.1M). The fastest growing ad network by audience reach
among the top 15 was Microsoft Media Network U.S., which grew 31%
versus year ago, followed by Collective Network (up 22%) and Audience
Science (up 16%).
FULL ARTICLE @ COMSCORE