If you're a Facebook user, there's a good chance you got an email over the last 48 hours with the subject: "Re: LEGAL NOTICE OF SETTLEMENT OF CLASS ACTION." It's not of the Nigerian riches variety. For one, it's only offering you up to $10. For another, it's legit.
The email stems from a lawsuit we've been covering exhaustively here at the Not-So Private Parts. "Fraley vs. Facebook" stems from Facebook's decision in 2011 to put users in "Sponsored Story" ads based on things that they had "Liked." The ads didn't always reflect the context in which someone "Liked" something, as the dude who famously wound up promoting a 55-gallon drum of sexual lubricant last Valentine's Day can attest, and there was no way of opting out (beyond not Liking anything).