Some time ago I ran into a case where a small airline managed to
purchase a domain name with redirection service, pointed it to the
Wikipedia article about them, and then later angrily contacted the
foundation enraged that we were 'hacking' their website simply because
users were editing the article normally.
I didn't think that I'd run into another one as weird as that, but I
think this comes close:
http://bathrobecabal.org/