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12 fun facts about Facebook on its 12th birthday

  • 3.5 degrees of separation

    This picture taken with a fisheye lens shows a man walks past a big logo created from pictures of Facebook users worldwide in the company's Data Center in Sweden. Jonathan Nackstrand/AFP/Getty Images

    Forget six degrees of separation -- that number has now been trimmed down to 3.5 degrees. According to statistics from Facebook, two average users are now only separated by 3.5 degrees. That's even less than the 4-degree average in 2011. Facebook attributes this increase in connection between disparate people to the increasingly global reach of the site.

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    Brian Mastroianni covers science and technology for CBSNews.com