Urban Dictionary is an invaluable resource for Pop Culture terminology. It allows you to look up any slang that you hear and you get GOOD definitions, not that Webster kind of stuff.

Top 3 Definitions

  1. Someone who is obsessed with someone else and stalks them on facebook. Not always traceable or noticable, but clues are: wall posts replying to every status update, viewing every posted picture of the stalked, etc…
    • I think Hillary is turning into a facebook stalker, she replies to all of my status updates…
  2. Someone who is obsessed with someone else and stalks them on facebook. Not always traceable or noticable, but clues are: wall posts replying to every status update, viewing every posted picture of the stalked, etc…a person who spends large amounts of time on facebook looking at other people’s profiles. often browsing photos, walls (or wall-to-walls), groups, or recent activity posted on the stalked person’s mini-feed.
    • “you are such a facebook stalker!”
    • “i found out that sarah joined a group when i was facebook stalking her last night.”
    • “mikey is so hot, i think i’m gonna spend most of the night facebook stalking him looking at his pics.”
    • “did you see emily and jenny’s wall-to-wall? they were totally talking about you behind your back!”
  3. An individual who secretly looks up people on facebook, going through albums, comments and personal information to piece together a picture of this person. Potentially developing into an obsession.
    • Tristan is a facebook stalker, he fs’ed the girl before he went on his date with her. By the time they were eating dinner, he already knew what things she liked and disliked.

Definitions copied from Urban Dictionary.