thats why sites should have good rules and moderators. If they see abuse. Whack it. Moderation is a skill in itself. Being careful not to be too heavy handed on good natured banter and so choke a good site.

As for free speach? The purpose of free speach is to allow for the petitioning of personal rights such as liberty and happiness. These are positive aspirations. It is not for the purposes of harming others.