1. When you take someone out of facebook limbo
by accepting their friend request
, but with the "This person can only see my limited profile" setting.
2. Moving a facebook
friend's status down from normal to limited profile so they can't see all your shit.
1. "Yeah that chick from my math class keeps adding me as a friend. I think I'm just gonna put her on Facebook probation so she'll stop annoying me."
2. "Alright this dude has commented on all 150 of my photos. He's going on facebook probation