Facebook hits 2 billion-user mark, doubling in size since 2012

David Ingram, writing for Reuters;

Facebook Inc (FB.O) said on Tuesday that 2 billion people are regularly using its flagship service, marching past another milestone in its growth from a college curiosity in the United States to the world’s largest social media network.

Chief Executive Mark Zuckerberg disclosed the number to his followers in a Facebook post. “It’s an honor to be on this journey with you,” he wrote. (bit.ly/2sefWFL)

Incredible achievement by Facebook, specially if take in consideration how fast they reach that second billionth user.