We know Facebook has helped police solve all sorts of crimes, from burglary to vandalism.

But did you know it’s also being used to fight a far more pernicious crime? No, not child sex abuse.

Underage drinking.

Apparently, a college student in Wisconsin accepted a Facebook friend request from a cute girl he didn’t know. Shortly thereafter, he got ticketed for underage drinking on the basis of a picture he’d posted of himself holding a beer–in his own home, no less.

True, it’s not smart to post pictures of yourself doing something illegal, even if it’s something pretty tame. (Some of the other kids caught in the same Facebook sting were ticketed based on photos someone else posted, though.) And if you do post those pictures, you shouldn’t accept friend requests from people you don’t know, even if they’re cute.

But for Pete’s sake–there has got to be something else these cops could be doing with their time.