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Google's plan to put ads next to all the world's content took a giant leap forward today with the announcement of a deal with Clear Channel Communications, the No. 1 US radio station owner - the search and ad giant will begin selling ads across Clear Channel's 675 radio stations. It's a multi-year deal that will give Google access to a little less than 5 percent of Clear Channel’s ad time.
Ads will be sold through AdSense for Audio, using a bidding system. The technology comes from dMarc, which was acquired by Google last year and integrated into AdSense for Audio.