I tend to agree with what's been posted up thread by arach. The creationists we seem to have gathered are either uneducated in the sciences or are educated loonies. I don't mean to be insulting, I'm just telling it like I see it.
I truly believe that sensible creationists who are willing to debate in good faith take one look at the current creationist residents and run a mile. They don't want to be tarred with the same brush.
I think the only solution is to smile sweetly and nod your head in agreement with them, while pointedly ignoring any topic which is being derailed by them or which is being used to hurl abuse. Maybe when they realise they're being ignored because of their behaviour they will modify it. Especially if each person who chooses to ignore them posts the reason for it. How about a thread for "Who I'm ignoring and why"? Patterns would soon emerge and it would become apparent to everyone, troublemakers included, that certain behaviour isn't welcome.
One of the reasons I don't post here very much now is that I find it a waste of my time. Why should I bother to post on my relevant are of expertise, hunting out references, when any points will be ignored, dismissed with a hand wave or used to "prove" I'm an evil atheist.