One billion — yes, billion — which is how many users Facebook now has around the world. Dino Grandoni of The Huffington Post reports:
Facebook hit the long-sought, 10-digit user mark at precisely 12.45 p.m. PT on September 14. Approximately 1 in 7 people on Earth is on Facebook, given the U.S. Census Bureau’s world population estimate of 7.04 billion
Not bad for a company founded in 2004.