Facebook today announced it now serves a billion active users monthly, one out of every seven people on planet Earth. Even more interesting, Facebook now has more than 600 million mobile users. Celebrating the milestone, CEO Mark Zuckerberg, who started the social networking behemoth in his Harvard dorm room eight years ago, posted a short notice on the company's blog alongside a promotional clip and a fact sheet with some interesting numbers...
Facebook hits 1 billion active users