So here's the thing about barefoot/minimalist running - there are a lot of people that make the mistake of thinking it is a new thing, just because of THAT BOOK.
Take Bruce Tulloh, for example, running barefoot in the 60's and 70's.
And Gordon Pirie in the 50's, advocating a forefoot strike and a minimalist type shoe. (google his book, Running Fast and Injury Free)
The craze is new, but the technique aint 
but SR is right it works for some people and not for others. it also needs to be entered into gradually as cougie says as your muscles won't be used to it.