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Mr. Hirsch is a veteran of the sales division, and he is leaving to work on more closely with startups. He is reportedly a member of New York Angels, a funding group that specializes in funding companies in the range of $250,000 - $750,000, and he also is said to have invested in Amie Street.
At the same time Google is losing their design lead for user experience, Kevin Fox. He is leaving for an unnamed startup.