Microsoft ad exec dodges painful Yahoo integrationMicrosoft VP Joanne Bradford has left the company and will join Los Angeles-based ad agency Spot Runner. Even with a new title of EVP, it's hardly a leap up the ladder. Our guess on why Bradford bolted? A former executive at Microsoft and Yahoo told us, " I shudder to think about a and Yahoo News integration." Bradford's departure plans likely came together not long after Microsoft CEO Steve Ballmer made it clear he favored Yahoo's brands over the MSN portal Bradford ran.