If you've got specific messages in mind, email me the message numbers. Ex-post-facto moderation relies on someone letting us know of a problem message. The alternative is pre-moderation, which you've said you don't like.
> well known members of the community
Note that the troll I referred to would sock-puppet well known members, including myself.
How would you suggest dealing with such a disruptive person? (The volume of his postings, all with different pseudo-accounts, was pretty large for a while.)
> for no reason
We've posted several times that professional demeanor is expected.
I doubt other HN'ers are interested in this exchange, so I'd prefer taking it offline and you can email me. See walterbright.com for the address.