Top Definition
A person who joins Facebook but only logs on 3 to 4 times a year and/or ignores friend requests and/or never or rarely replies to messages.
Jon: Did you see that Mary joined Facebook?

Jones: Yeah, but it was six months ago and she has, like, no friends. She's a real faceghost.
#spaceghost #misanthrope #luddite #introvert #antisocial #poser
by Winston Churchill VIII August 04, 2009
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