1 definition by Johnny Popular

An acquaintance or friend from a previous phase of your life with whom you are "friends" on Facebook. Without Facebook they would have drifted entirely out of your mind-space except for very occasional "remember that guy?" reminisces. But because of Facebook, they continue leaving attenuated mental impressions on you.

This term isn't meant to include old friends who you don't see often but to whom you have a deep connection. Also, Facebook ghosts can become real friends and acquaintances again through a renewed connection or contact, often through Facebook itself.
Gavroche: Who is that guy with the crazy hair who keeps popping up on your newsfeed?

Fantine: I went to High school with that kid, but I haven't talked to him in years. He's just a Facebook ghost.
by Johnny Popular November 25, 2011
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