• StumbleUpon is a social networking plug-in for Firefox and Internet Explorer that directs users to sites of interest based on his/her ratings of previously visited sites and the recommendations of like-minded stumblers. Users rate sites using a thumbs up/thumbs down rating system to determine preferences.Official Site: StumbleUpon

• Fast Facts

  1. Founder: Garrett CampCrunch Base: StumbleUpon Company Profile
  2. Founded: December 2001Crunch Base: StumbleUpon Company Profile
  3. Acquired by eBay in May 2007Crunch Base: StumbleUpon Company Profile
  4. Uses a Thumbs Up/Thumbs Down rating system to determine preferencesOfficial Site: StumbleUpon
  5. Features one-click built in bloggingOfficial Site: StumbleUpon
  6. 5 million registered users as of April 2008TechCrunch: StumbleUpon 5 Million Users

• StumbleUpon Rumors

  TechCrunch reported on September 18, 2008 that eBay had hired Deutsche Bank to find a buyer for StumbleUpon. eBay acquired StumbleUpon in May 2007 for $75 million.TechCrunch: eBay Selling StumbleUpon

• Related Pages on Mahalo

  How to Use StumbleUpon Like a Pro | Firefox | Internet Explorer | Fark | Blinkx | YouTube | Digg | del.icio.us | Delicious 2.0 | Veoh | Metacafe | Faviki | Reddit | Propeller | TechCrunch | eBay | ffwd

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