Faceoff

(n.) An argument or dispute between two or more people viewable on a Facebook Wall.

*A Faceoff on Joe's Facebook Wall*

Sally: "Joe, you were such a jerk at the party Saturday night. I can't believe you said that."

Joe: "Yeah, Sally? Well, you should have known better -- bringing HIM to the party!"

Sally: "Whatever! If you hadn't cheated on me with that skank.... "

et cetera, et cetera....