Jorn
Years ago, I crossed swords with Jorn Barger, a fellow who loved flame wars and who, pretty much singlehandedly, essentially destroyed alt.hypertext. Dave Winer recently pointed out that Barger's weblog has become a home for weird anti-Semitic posturing: Barger thinks, for example, that the Israeli government evacuated its citizens from the World Trade Center on 9/11, and thinks the hawks in the defense department are a Jewish conspiracy.
It figures.