It is, to a degree, universal--but I for one don't like reading a rudely worded post that addresses the users of the forum at large (a group I'm a part of) and tells us that we behave like idiots. Anyone that's dueled with me knows that I am generally quit polite, and only really get rude if someone is extremely rude to me or to a friend of mine.
There are better, and more polite ways to word it so as not to offend people. I'm not sure how to do this, but can't you make it so that people connecting to your server get this message? Wouldn't that be a more effective solution than just complaing to anyone who will listen?
Just some ideas...
Vestril was here!!!!!!!!!