it is just a seo book,you will not find magical seo method.Seo book is famous because have a good marketing campaign.
Well, to anyone willing to pay for this information, I would recommend this book over any others. He's got good stuff in there and not everybody has time to read all the fora and blogs out there. And since marketing is a major part of good SEO, it makes sense that a good SEO would know how to do marketing. I mean, would you trust a marketeer that doesn't market themselves well?