Although Hubski enables you to ignore posts that you don't want, there isn't a commenting filter, and it's not something I'd personally like to have. Thus, we are left to a sort of social contract, or at least established norms. Here's my thinking on this:

Even if it is explicitly discouraged, some people will be hostile to others. Personally, I have no interest in justification for hostile behavior, original salvo, or in retort. However, as different people will draw the line at different places, control is in the hands of the offended party.

Here's my suggestion: If someone offends you, either 1) continue the discussion in a civil manner, ignoring the hostility, or 2) do not reply at all.

I hope we can not only make a genuine effort not to engage in hostile behavior, but to also ignore it whenever it occurs. Sometimes it takes walking away for a bit and coming back :), but we should not give hostility fertile ground, especially when it begs for it.

I'd like to know what other people think on this, as I might make some changes to the about or faq pages.