United States antitrust officials on Wednesday gave the green light to Google's proposed purchase of dMarc Broadcasting, a company that deals with the sales, delivery and reporting of radio ads. Google will pay $102 million in cash, but performance based payments could reach another $1.14 billion.

The U.S. Federal Trade Commission reviewed the deal and found no issues of concern. The purchase of dMarc will give Google AdWords subscribers a radio distribution channel for their advertisements. The company has already branched into print ads, and was rumored to be looking into the television market as well.