MySpace is testing a new in-stream ad format that embeds sponsored messages directly into users personal feeds such as status updates.  Adweek reports that the social site is quietly testing the format and has already served ads for Coca-Cola and Procter & Gamble products.  MySpace chief executives speaking at the Interactive Advertising Bureau annual meeting described that the ad unit is designed to leverage MySpace s position as a place people go to find new entertainment.  The executives said just as users interact with friends on the site to hear about new music and movies, now they ll discover and pass along sponsored messages.  Adweek cites comScore data that MySpace has seen two straight months of growth to reach just under 70 million unique visitors in January.  The usage represents the social site’s highest since July 2009.  Read more at Adweek {link no longer active}.