I'll suggest better one, how about deleting whole account?
There's no way to do that; many have asked, none have succeeded. Maybe that'll be a feature of the soon-to-be-arriving-soon new forum software. Plus OP doesn't really want his account deleted, because he seems like the type who'll just keep coming back whenever it suits his purposes, and when he inevitably runs up against the brick wall of moderation he'll continue to bitch about it. Some people outgrow bitcointalk within a year or two, and some people linger far past the point when they should have left.
....
This feature must have been removed.
Simple Machines forum software definitely allowed the deletion of accounts pre-2010.
This forum allowed it too.This is the most hilarious thing that I've read, because I imagine an annoyed Satoshi at perpetual new users coming in, posting, and deleting their accounts.
Or maybe it was a Gavin who removed it for some sort of legal concern or requirements?