I find it annoying to spend the effort to type a post, only to have it disappear into a bit bucket.
Post deletion is apparently rare and will remain so. If you type a post which clearly falls under the deletion policy, you deserve to have it disappeared without a trace. I'm sure that borderline cases would be discussed first and you will have a chance to edit your submission.
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.