Corporate raider Carl Icahn, who has purchased 4.3 percent of Yahoo and proposed a new slate of directors for its board, hates Microsoft's latest plan to purchase Yahoo's search marketing business or otherwise partner with Yahoo to gain control of it. "Microsoft is trying to get the milk without buying the cow, and if you look at Icahn's history, he has never been used that way," one of Icahn's secret stooges told CNBC. "He does not want to see Yahoo pushed into some joint venture with Microsoft and is not going to be used to push Yahoo into it." Icahn and like-minded shareholders favoring a Microsoft-Yahoo merger control at least 29 percent of Yahoo. They do not, however, control Microsoft.