In this article in Science News, Tom Siegfried talks about the misapplication of statistics. His target is scientists who draw statistically-driven conclusions that aren't in fact supported by the data.
It's well worth the read; the lesson goes beyond the purely scientific realm and is applicable to business as well.
We are indeed lucky that someone with Marc's knowledge and discipline can find the time to post and link so instructively. Tom Siegfried's piece was quite a read, and helped me to get a better perspective on statistics in marketing. I suppose we have to accept that the best tools for deception will be in general use where profit is the only moral parameter.