as for banning, excluding or otherwise banishing people's words that you alone (who could be a finer judge?) find offensive...
I propose we use the PMT thread filter. otherwise known as the Protestant Milk Toast web filter.
comments such as "up yours fish face", come out "nice weather I am having today".
In most cases word substitution is the primary function: evolution becomes creation etc. but for truely viscious comments the transformation could be total and profound.
For example "what we need is a new creation of what is sacred now that we have found that things do happen in our universe at the quantum and macro scales that defy all known laws of physics, we need an understanding of an all natural God and not a supernatural exclusive god."
becomes... "lambs of mercy sakes, what do you suppose is his problem, Satan?".
check out the PMT filter and buy one for mudcat that can be used exclusively on the BS section. ITs not cheap. They want 10% of your income per week but you might find a pirated copy for less elsewhere.