While Facebook's stock price has taken a noticeable dive since its IPO last year (sorry, Zuckers), the company has been quietly working on slicing and dicing your data to the delight of advertisers.
Lucy Rendler-Kaplan / LA Weekly Flickr pool
They know deep stuff about you, and that's money. This week researchers at Boston Children's Hospital revealed that Facebook data can even predict if you're fat.
Don't all suck it in at once (besides, Facebook doesn't know you're doing that):