I found a copy of the first edition of this book while building a website to host games of Go, and as a reference to chess-playing sites, it's very useful. The problem is that websites come and go, so some of the information in the second edition is already out of date.
The interviews with the owners of the sites vary - some are very enthusiastic while others are virtually monosyllabic.
If you are interested in playing Chess over the web, then this is pretty much the only guide available, so it's well worth the price.
Hurst is currently working on a book about Kirsan Ilyumzhinov and Kalmykia which promises to be very interesting.