Greg Coleman’s tenure as president of AOL’s Platform-A (NYSE: TWX) lasted less than 100 days, part of a major shake-up as new Chairman and CEO Tim Armstrong takes firm control. AllThingsD’s Kara Swisher reports that the former *Yahoo* ad exec is gone along with CFO Nisha Kumar. Coleman’s replacement is Armstrong’s fellow *Google* sales alum Jeff Levick, Swisher added, citing unidentified sources. Levick’s most recent title at the search giant was VP, Industry Development & Marketing, The Americas.
— Some said it wouldn’t last: Coleman’s ouster comes just three weeks after Armstrong replaced Randy Falco. Coleman was the third president of Platform-A in little more than a year. An e-mail to Coleman bounced back and calls to AOL representatives were not immediately returned. During an interview the day his hiring was announced, Armstrong told paidContent: “I