Too much moderation on these boards?

I for one, wouldn't bother posting much here if it wasn't for decent moderation. There are plenty of would-be opinion expressers out there who haven't got the background to sustain a decent debate on some of thescience topics and there is a real need to ride herd on them or the real science contributors will just leave. That is not to say that non-science people shouldn't have a fair chance to get sincere questions answered, but the obvious trolls must be sanctioned and segregated if they won't play by the rules. While I have ocassinally been cautioned on a rant, there are plenty more times I have needed moderation to stop some troll derailling a decent thread.