• What's StumbleUpon?

  According to their website, StumbleUpon is a free service that helps you discover and share websites with others who have similar interests. The more you use our service, the more likely it is that you’ll “Stumble” across pages you like.

  Basically, it helps you find cool stuff on the internet based on what you like.

  Official Site: StumbleUpon

• 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

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