1. A celebrity whom has a Facebook based on his/her life memoirs either written by them or for them. Can be fan based or authentic.
2. A person whom, ambiguously but desperately seeks attention from one thousand plus friends in attempts to have the only kind of fame they will most likely ever get in their lives. They do this by trying to look cool, posting statuses they think are funny but are actually annoying to others, and by starting drama between one or more persons. Also, see "attention whore".
Man, Alisha is such a FacebookCelebrity. She tries so hard to be cool.
Yeah, all the people that like her status are prolly just feeling sorry for her.
A person who (in their own mind) has made him/herself a "celebrity" on Facebook. Such a person has no "real life" and has made Facebook their only way of being popular, with constant statuses, posts and pictures since this is their only way of getting attention.
Q: Hey, have you ever met Celeste?
A: No, but she is a Pseudo Facebook Celebrity who constantly puts up statuses glorifying herself.