Crap gets censored? Bugger. I can see why racial slurs are out, though. But I didn't realise crap was offensive - it's not what you say, it's how you say it. 'Stupid' is more often offensive/rude than 'Crap'. I'd even go as far as to say that it's even more offensive.
Oh, and this isn't arguing against the rules in these forums so much as discussing them in general throughout the world. I don't understand why words such as 'crap' get censored whilst 'stupid' and 'idiot' aren't.
EDIT: It seems I read a previous post wrong, crap doesn't get censored here. Hurrah.