Facebook limbo
The electronic space between accepting and rejecting a facebook friendship. In facebook limbo, the user fails to accept or reject friend requests from would-be facebook friends from a variety of sources (e.g., random annoying classmates, despised work associates, ex-girlfriends, etc), because the user is uncertain if he or she will have to interact with these individuals in the future.

(At the bar)
Jim: How about that new kid, Ryan. He’s so cool.
Thom: I dunno man, he already tried to facebook me, wtf?
Jim: So?
Thom: So I’m leaving him in facebook limbo, I don’t want him jo’ing to pictures of my drunk girlfriend…