Even ignoring the obvious problems with the study as described, it was likely to be a hoax just based on how pat the conclusion was and how it fed into the prejudices of those of us who must deal with IE6 on a daily basis. It does make for an interesting study as a weaponised meme though; and it's exposure as a hoax is not likely to hobble it's effectiveness in spreading the idea that people who use IE are drooling i…
http://en.wikipedia.org/wiki/Confirmation_bias#Persistence_o...
I know about confirmation bias, so I should consciously look closer at things that confirm my prejudices, but it's not easy to remember. In this case, was actually wary of the conclusions (unless I'm misremembering, which is a whole other issue), but I think that's largely because it was such an obvious example.