AOL (NYSE: TWX) quickly followed the closing of its estimated $340 million acquisition of contextual ad company Quigo with a number of personnel changes: First, CEO Mike Yavonditte will step down from his post to serve as an adviser to Curt Viebranz, president of AOL’s Platform A, which houses all of the company ad units; Yavonditte will stay on in that role for about the next six months. Quigo CTO Michael Fisher has been promoted to president. Kevin Fortuna will run AdSonar and PageCast, Quigo’s respective ad and video content targeting platforms; he’ll also oversee the finance and marketing teams. David Sasson will lead the FeedPoint and Product Management teams. More details about the purchase—AOL’s fourth this year—in the release.