Why I'm asking: I've noticed a lot of rudeness IC lately. Just plain dickishness, really. There are ways to write that do not involve insulting the players around you and creating a generally unhealthy environment.
You may be discussing something specific I'm not aware of, but generally speaking I think this is largely due to the way the players in the game treat dueling.
Typical scenario: Character 1 acts like a dick, is challenged to a duel, and then makes stupid excuses ("you have no honor/my duty to the realm/blah blah blah") and the rest of the game simply allows it.
If you are challenged to a duel and you avoid it, you ought to be branded a coward and doors shut in your face. (then it becomes a matter of that chars political strength, but let's stay in a general sense). This way, dueling acts like the deterrent it was meant to be - don't want to be killed in a duel, best watch your language.