tempted but worried it'll be like freakonomics, review needed, ie buy it then tell me.
It's on the Zonal Marking reading list so I had a look at it, but having read a few reviews I decided against it. Sounds pretty half-baked.
I don't think it's a good "read" per se as it more or less just presents stats, some of them interesting, but overall it's a bit tedious.