Having indeed played the odd long night on Xbox-live I can safely say that the pre-pubescent out there have waaaay more colourful language than me and mine ever came up with. hence the tendency for interesting and baffling insults. I'm not sure I can even use the f-bomb as many times in an hour as they did (and I swear far too much IRL)
but then its not all about the 12yearolds. Alas t'is about every numbskull that has a need to just get nasty and we have all those pvp rules to prevent people getting nasty on each other so it kinda makes sense to have rules on swearing too.
of course it might not be so necessary if we ware all in RP and didn't act out of RP. Be nice, wouldn't it?