I understand what your saying in that thread, maybe the game should censor smilies? RP Nazi or not, it is an RP game isnt it?
Yes, this is supposed to be an RP game. However, (I have also been implementor in an italian MUD for a couple of years) finding a common definition for what RP is and how to enforce it is extremely hard.
PS as such has, differently from similar games, a decent amount of players who attempt to do some RP, however, the game structure is not promoting it at all (imho) and there is not any serious "police" cleaning up the mess of not doing RP.
Brackets or not, it is also hard to control who says anything and check it out.
When I was implementor of the MUD it was extremely hard to check all the dialogues. I was often spending some time scanning the logs for bad words and often I had to "spy" on players. It was not pleasant, but it was the only way to be semi sure that some sort of atmosphere was respected. It could be good here, to create at least an alternative "NOT RP" channel in game, where people can express their throught without ruining the generic atmosphere.
But, then, it is up the the planners to steer the game toward a certain direction.