Google expands into radio ads

In Google’s first foray into broadcast media, the search giant is now selling radio ads in Detroit through an online interface. The idea is to give smaller advertisers more access to the medium. Six months ago Google acquired dMarc, which designed the system. “We’re anxious to see how it works in the real world,” said Mary Schiemel, senior VP and director of local broadcast for TargetCast tcm, a media buying company. (Free reg. req.)