Posting to Facebook only to get a specific reaction from a specific person. Causes nearly all Friends to say, "Huh?", but one particular Friend to say, "Oo. I know what that's about." Not always negative. Not always positive.
The act of posting on an acquaintance's wall after seeing them go idle in your friend list in order to bait them into getting back online. Usually targeted at women with whom the FaceBaiter is only loosely acquainted with the ultimate goal of starting a chat conversation without the appearance of trying.
Person: You talk to that girl from the party last weekend?
FaceBaiter: I was just about to but then she went offline. That bitch is never on!
Person: Dude, try FaceBaiting her. Tag her in a picture then you can mack all over that bitch when she gets back on. Get some!
FaceBaiting - where you constantly invite a person to be a friend on FaceBook when you KNOW their circumstance demands they can't accept...
I knew he was gay and in the closet and accepting my friend request would tip off his overly inquisitive and (rightfully so) insecure-about-his-sexuality girlfriend, but I kept FaceBaiting him anyway figuring when he'd finally accepted who he was, he'd simultaneously accept me as a "friend"
The act of posting a status that is directed at a specific person(s) in a passive agressive attempt to hurt, humiliate or anger them; done in such a manner that everyone knows who you are insinuating.
i.e.: I would hate to have a sister who throws herself at every guy she meets.