Facing challenges: A 2010 photo of Yahoo acting CEO, Tim Morse, who is meeting more frequently with top managers than his predecessor did. By Bloomberg

Cohn joined Yahoo six years ago as a business strategist, working his way up to become a senior director in charge of generating revenue for new initiatives. He says he is a believer in the one-time Internet pioneer, and that he considers its current management the strongest of any since he arrived.

Even so, Cohn left Yahoo in October to start a technology company of his own.

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