I reckon the outright and outrageous denialists will never be that big a problem, they'll be shouted down wherever. The more insidious form of distortion, for me, is the easy romanticising of the Third Reich that many seem to indulge in, it may begin as a strong interest in the era (nothing wrong with that) but among some it flowers into a rather 'Barbara Cartland' view that becomes more detached from reality (Like that recent Peiper site). The worst aspect of this to my eye is that there are many books published that are more interested in 'Steely-eyed' Nazi 'heroes' presented in an uncritical manner than a bit of gritty actual history. An excellent example is the amount of Michael Wittmann hagiography one can easily find compared to the scarcity of actual good information. I don't think the approach is intentionally sinister, but it becomes so as it feeds upon itself. It seems the Eastern front has been more fertile ground for this kind of balls, perhaps down to 50 years of strong Anti-communism in the US allowing a more positive view of the Germans that can be portrayed as fighting that ideology?