The internet is a magnet for the socically inept. This is probably why I'm here!

The techniques used will start to wear thin and most of us will just ignore them after a while. The person in question is really just mentally masturbating using poor wording and half truths to try and make a point that can't be made. You could lock these people out, but then they'd get in via a pseudonym. Maybe we could have a 'loser' or 'yawn' vote. The moderators could also cull the responses that pander to the person so we're left with the responses that treat the person with the respect they deserve. Unfortunately, this amounts to censoring, but never let the truth get in the way of righteousnous.