What do you tell them?
I presume it would include things that David Gerard could not repeat here. After all that's why the folk in question contacted people from the Rational Wiki community in the first place!
Actually, I may have just answered my own question by reading the RW page on the b*s*l*sk that three prominent blogs and a discussion forum recently all linked to. Does reading that calm them down?
If it's worth saying, but not worth its own post, even in Discussion, it goes here.