Be VERY afraid. I've been online forever, and have never done this. I'm sure they can pack a lot of damage in a few words. Also, unfortunately when you type "Jehovah's Witnesses" in anywho for phone nos. you do get some stuff that doesn't quite look right--along with the legitimate phone nos. It's just names of sites--not much description--fortunately, but I try not to even look, since they are in an area separate from the numbers.
Sistersoup is a very well moderated site for sisters.