AOL’s ad network, Platform-A, served ads to 170 million US internet users in March, representing 91% of the total US online population, according to comScore figures for March.
Advertising.com, the main component of Platform-A, accounted for the bulk of this reach, with more than 167 million US internet users.
Yahoo! Network ranked second with a reach of 160 million, followed by Google Ad Network (152 million) and Specific Media (140 million), said comScore.
Jeff Hackett, comScore vice president, said: “Ad networks have become integral components to the online advertising industry over the past several years by helping aggregate audiences for the purposes of delivering impressions to a broad array of Internet users.
“The increasing ability of many ad networks to target and deliver ads either behaviorally or demographically is enabling a more efficient expression of ad dollars and an improved return on advertisers’ online marketing investment.”
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