What bother me the most on the internet discussion is no matter how polite that you intend to treat others, some people just won't return back with the same kind of politeness. Finally you just gave up and said, "If you want to fight, let's go outside and show me how good you are." Everything will just go down hill after that.
you have to understand the medium first. On here there is no body language, tone of voice, or physical representation so you have to take everything with a pinch of salt. Do not get EMOTIONALy involved.