comScore: Facebook Numbers Up Across The Board

MEDIAPOST — It's no secret that Facebook continued to grow at a breakneck pace last year, with active users more than doubling from 150 million to a staggering 350 million worldwide. Its monthly audience growth numbers have likewise been equally gaudy, more than doubling from 54.5 million U.S. unique visitors to 112 million unique visitors during 2009. That makes it the fourth-most popular U.S. Web property -- behind only those of Google, Yahoo and Microsoft, according to comScore. On Thursday, the Web measurement firm released deeper data on Facebook usage, highlighting the social network's surge in engagement as well as overall traffic...