How tightly are we defining memetic basilisk? It's obviously possible to talk some people into getting themselves killed.
Yes, and some people will kill themselves spontaneously even if you don't talk to them (or even especially if you don't talk to them). However, AFAIK there's no generally applicable mechanism that you can use to talk any arbitrary person into killing himself, with a high degree of reliability.
What do you believe that most people on this site don't?
I'm especially looking for things that you wouldn't even mention if someone wasn't explicitly asking for them. Stuff you're not even comfortable writing under your own name. Making a one-shot account here is very easy, go ahead and do that if you don't want to tarnish your image.
I think a big problem with a "community" dedicated to being less wrong is that it will make people more concerned about APPEARING less wrong. The biggest part of my intellectual journey so far has been the acquisition of new and startling knowledge, and that knowledge doesn't seem likely to turn up here in the conditions that currently exist.
So please, tell me the crazy things you're otherwise afraid to say. I want to know them, because they might be true.