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August 22, 2011

50% Social Media Referral Traffic in US Comes From Stumbleupon



According to StatCounter's measurements, StumbleUpon has just surpassed Facebook and now delivers more than half of all social media referral traffic in the U.S. StumbleUpon founder and CEO Garrett Camp tweeted the news this afternoon.

Facebook achieved this goal in April of 2010, but StumbleUpon was already well on its way. At that time, StumbleUpon already gave twice as many referrals as Twitter. StumbleUpon's user experience is fanciful and fun, but its traffic power for publishers is quite serious. While the other social networks make the headlines, StumbleUpon has been a quiet success story.


StumbleUpon uses collaborative filtering (an automated process combining human opinions with machine learning of personal preference) to create virtual communities of like-minded Web surfers. Rating Web sites update a personal profile (a blog-style record of rated sites) and generate peer networks of Web surfers linked by common interest. These social networks coordinate the distribution of Web content, so that users "stumble upon" pages explicitly recommended by friends and peers.

Major Milestones of Stumbleupon
December 2002:StumbleUpon had 1 million users

May 2007:StumbleUpon was purchased by eBay

May 2008:StumbleUpon said that before the end of May 2008, it would have collected its five-billionth stumble. More than one billion of which would have taken place in 2008 alone.

September 2008 eBay hired Deutsche Bank to try to sell StumbleUpon again

April 13 2009: founders Garrett Camp and Geoff Smith and other investors including Ram Shriram bought the company.

May 2010: Reaches more than 10,000,000 members

August 2011 :StumbleUpon reached 25 billion stumble mark, at which point they were adding over one billion stumbles per month.