I think the antipoint system is a good idea BUT the only reason anyone should ever get banned is for blatent abuse / mis-use.

I refer to a row I had with eRok - no swear words or harsh insults we're exchanged and it was only a MINOR disagreement. But now I find that eveytime I log in I get the 'Your being a pain in the ass' message and warnings that unless I change my ways I'm gonna be banned.

Do I bring value to AO as a user? YES
Do I answer others questions? YES, well try to..
Do I swear & whine? No

Fair enough if people want to disagree with each other thats cool, and if people want to give each other negative antipoints then thats cool too BUT there's no way you should be banned for simply expressing your opinion. (Unless its racist, hate speech, or just ridiculously offensive) I think we're all a bit too quick to assign negs here at AO.
If we dont make mistakes we cant learn.
If your banned before you can walk your gonna hate AO and probably post some nasty sh1t

Lets all try to be tolerant of each other.