No, no, no, no....
Many people believe your true feelings come out when you've had a few so I say no to banning, not that you could do it anyway (imo). We all let off steam now and then so I see no harm. If something is over the top then maybe delete the offending post but again why? Let's be open and perhaps people will think again before posting after a few swift ones. Again it's about being mature and using some self control when you see something that annoys you.
Leave the banning and censorship to others, if a complaint is received then action can be taken after careful consideration and based on the merit of the complaint. I like to think deep down everyone is a decent human being but some may use the message board to let out their own Mr Hyde al la Chico.