Trolls are generally people who post with the hope of invoking a negative reaction (e.g. negative responses, flames, downvotes, censorship, bans). Identifying trolls is often a harder job than defining them.
So does asking for criticism of your argument count as trolling?
http://wiki.lesswrong.com/wiki/Deletion_policy
This is my attempt to codify the informal rules I've been working by.
I'll leave this post up for a bit, but strongly suspect that it will have to be deleted not too long thereafter. I haven't been particularly encouraged to try responding to comments, either. Nonetheless, if there's something I missed, let me know.