Jim: How about that new kid, Ryan. He's so cool.
Thom: I dunno man, he already tried to facebook me, wtf?
Thom: So I'm leaving him in facebook limbo, I don't want him jo'ing to pictures of my drunk girlfriend...
(At the lunchroom)
Alex's Stalker Ex: Why didn't you add me to your friends on facebook? I friend requested you last week! I thought we were friends now! How come every day when I go through your whole list of friends I'm not on there?
Alex: Baby, it's okay, I just haven't had a chance to approve you.
Note the subtle difference between Facebook limbo and Facebook purgatory: limbo is forever, whereas purgatory is not.