Actually I like the idea that the chat rooms have. The ones I have seen have a little button the allows you to "ignore" anyone you choose by selecting their name. Put in "guest" with no other monicker and voila you get blank space where they posted. I tend to read the first few sentences of their posts. If they don't make it through a few without insulting the poster instead of actually debating then I might read more. Mostly I self edit. It's a shame, I might miss some good points but I don't need to learn from anyone who wants to use bullying tactics while posting.