Just to de-lurk for a little, I thought I'd share an observation as to why the holocaust deniers are irrelevant in real life. I just spent nearly 2 weeks in Berlin. There I saw voluminous documentation of the nazi terror regime, as presented by the Germans themselves. A bunch of wingnuts on the internet really aren't going to have any impact in the real world, when you can walk through a street-length exhibit of the years '21-45, seeing actual photographs of real life people being rounded up and deported after years of subtle discrimination solely for being homosexual, gypsy, Jew, communist, etc. Where you can see Nazi maps of Charlottenburg verified as Juden-Frei, where you can read the words of the Nazis themselves as to their intentions, where you can see the actual train platform where the cars left, etc. etc. etc.
I wouldn't get too emotional about the fantasies / mental illness exhibited here; their efforts are impotent. I know that some of you won't just ignore them, and I do learn some fascinating history on occasion, so keep on keeping on I guess.