Entrepreneur who founded and sold 3 companies. @Techstars mentor. Deep in crowdsourcing, marketplaces, saas, social media. MIT @Sloan MBA 2004. CS undergrad.
Investor in mission-driven startups. Former CEO of @Ofoto, @Xoom, and Xmarks. Co-founder of @When.com. Seed investor in @Postini. CS @ Brown U.
Angel Investor and former Managing Partner at Kleiner Perkins
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Investor in Opinionaided.