Be careful what you type http://www.telegraph.co.uk/technology/twitter/8962325/Unwitting-criminals-of-the-Facebook-and-Twitter-generation.html
IIt's bad enough some people post every thought that comes to them online, but do they really need to provide the cops with evidence too? Then again, if there are a few million people doing the same thing at the same time it's a lot harder for the authorities to wade through 'em all and if the result is the removal of that authority...
I gave up on Facebook, every day there was some sort of warning in the press and half of my "friends" appeared to live a boring life