A few clarifications
As the subject of the article, I think I'm in a position to clear things up for some of the above commenters.
@Ian Ferguson: I've not done any "hacking". The security expert quoted in the article mentioned some of the extreme ways in which this exploit could be used, but my use was limited to pairing of usernames and IP addresses for a very small number of individuals. This may or may not resolve your concerns, but I should add that in my opinion, the target of my efforts is engaged in an effort to cover up a serious crime, and I in an effort to expose him for doing as much.
@Dan Davis: I am not affiliated with a political party and Patrick Byrne is Libertarian. I've worked for candidates of both major parties. I don't think it's accurate to classify either Byrne or myself as strictly Republican or Democrat.
@Ben Colman: I don't work for Overstock.com. Furthermore, I don't feel particularly obligated to help Yahoo's army of developers identify security flaws while the company seems happy to allow its message boards to be used and abused by short selling stock manipulators as a forum for spreading libel and disinformation against targeted public companies.