I have a relative that keeps copying and pasting everything she reads that says "if you BLAH BLAH BLAH, repost this message!" regardless of what it is, as if the Facebook police are going to ban her if she doesn't. What is worst of it is that a good number of them are long-debunked urban legends, or posts that don't even make any damned coherent sense. And her friends will comment about them in some panic. Like that Facebook is going to start charging people to use the site, because it was all over the internet and on TV... the internet and TV that apparently 6 billion people DON'T use. I will often link to snopes or somewhere to show her that none of this stuff she is posting it real and she's just continuing the chain of some big hoax... but then she'll take that post and re-post what *I* posted and tell me "Oh, I didn't know, one of my friends posted it so I was just passing it on."
I think I may have friended two people in the last year. The desire to find people died after about two weeks. But what pisses me off is when someone sends ME a friend's request, and then takes me of a month later. I can understand if *I* friend them and I end up being a dick or something and they don't want me to be part of their online acknowledgment, but what the hell is that shit?