News Summary: Facebook now home to 1 billion users

ONE BILLION: More than a billion people now log into Facebook each month, up from 500 million in July 2010. In August 2008, the social network had logged 100 million users.

MOST FROM ABROAD: Most Facebook users _ 81 percent _ live outside of the U.S. and Canada. Many of them log on from mobile devices rather than personal computers. The company now has 600 million mobile users.

ODD VIDEO: Facebook also released a video that, somewhat abstractedly, seeks to illustrate its ubiquity and utility in connecting people. It starts off with an empty red chair suspended over a forest and later proclaims that "chairs are like Facebook."