Seriously? Is there chopper member exist here?
Yes, one of them is
hilariousandco
I think now it is time to look back the ANN thread of theymos, when he enabled the option for self-moderated threads.
From which, there are two main objectives of self-moderated threads:
- Owners only want to collect posts that reply to them, not to others in their self-moderated threads.
- Posts reply to other respondents (not threads' owners) will be judged by owners and delete or not delete will depends on their perspective as well as their mood.

Basically, there is nothing wrong if a user posts in a self-moderated thread and minutes or hours later see that post deleted. It is the 'worst' case that poster should aware of at beginnings.
In most sections, you now have the option of marking topics self-moderated when creating them. In self-moderated topics, the OP can delete replies. The option for enabling this is under "additional options". Topics cannot be converted to self-moderated topics after creation.
There are no rules to self-moderation. In self-moderated threads, replies belong to the OP. In other threads, replies belong to the respondents individually. Think carefully about whether you want to reply to a self-moderated topic, as your post may not be given due respect.
Tell me if there are any bugs. If this ends up not working out well, I might remove it.