Facebook is allowing advertisers to buy ads (and target behavior) on sites that are NOT Facebook.
From Recode.net:
What’s that? You’re worried about people using your Facebook data to serve you ads? Facebook says you shouldn’t worry, because your identity will remain anonymous to advertisers and publishers — they’ll just know some basic facts about you. But really, if you’re worried about this kind of thing you shouldn’t be on Facebook. Actually, the whole Web is probably a no-go zone for you. Sorry.
Even more on this:
- Atlas Solutions – by Facebook
- Facebook assault on Google’s Doubleclick coming this fall – The Information