The #1 thing that annoys me about Facebook (at least, at the moment) is the kids! I mean the ones who are obviously under 13, and even a lot of those who are around middle-school aged.
My little sister has a profile. She's 11! I about had a heart attack when she sent me a friend request! I phoned my dad straight away and told him he should make her delete it, because she was too young according to the site rules, and also because there's a lot of content on there that just isn't age-appropriate- much of it coming from a particular 'party girl' cousin of ours. And finally, I told him, there's the whole security issue. Not only does it make it easier for her to be targeted and bullied, but there's the risk of her posting personal info.
"Well, her mother told her she could have one, so that she could keep in touch with [other sister who had just left home]. I think it's stupid, but nobody listens to me."
So, I've been trying to kind of keep an eye on things, so that if it does appear that she's being bullied or anything, I can let someone know. And I had a talk with her about how important it is to keep personal info out of public view, and keep her passwords safe and everything. Then yesterday...
Friend: OMG I might be getting a cell phone today!
Sister (in comments): cool my number is [insert her mobile number for the whole freakin' world to see].
Now, maybe I'm overprotective, or prudish, or just downright paranoid and fun-hating... but ack! That's exactly why she shouldn't have a Facebook page! (Or possibly a mobile, for that matter... but that's another issue.)