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Image result for stumbleupon StumbleUpon Company stumbleupon.com StumbleUpon is a discovery engine that finds and recommends web content to its users. Its features allow users to discover and rate Web pages, photos and videos that are personalized to their tastes ... Wikipedia Founded: 2001, Calgary, Canada Content license: Proprietary freeware CEO: Mark Bartels (Jan 2013–) Headquarters: San Francisco, California, United States Acquisition date: May 2007 Founders: Garrett Camp, Justin LaFrance, Geoff Smith Profiles Facebook Twitter YouTube LinkedIn Google+ People also search for View 10+ more Facebook Digg Myspace AOL Polyvore