People take things too personally on forums. It's not hard to have a discussion with someone as long as one of the parties don't do something stupid like saying "Your an idiot, you have no idea what your talking about, you should be banned from this forum".
If you don't like what someone says, try and dismiss their point with your own. But this can be done without insulting someone. I remember not too long ago there was a thread of very intelligent people all making their points without causing problems.