Bad idea, why should those who cause no trouble get tarred with the same brush?
Plus that is exactly what anti TMA ers would like to see .
I'm for TMA but don't mind the warning sign if it helps.
Signs shouldn't be needed, people should be able to be trusted to behave like adults whilst using this place.
Whilst i'd obey the warnings i still think they show the forum in a bad light to prospective members.