I just read it yesterday in the bookstore actually (Yes, they let you do that at Chapters, it's saved me thousands probably).

It goes into a lot more detail than just formulating good search queries. It covers SEO, Google Analytics, Google Maps, Sitemaps, the Google API, PageRank, and AdWords, to name just a few. I would have bought it actually, but I went to the bookstore sans le cash so I wouldn't be able to buy anything on impulse.

It was a great read, I read it because I'm working on a project which uses the Maps API to generate maps displaying job locations and whatnot. It helped a fair bit, although it was based on the previous version of the maps API and not the most recently released one (i.e. they claim Google has no geocoding service - which was introduced with the latest API)

I'd highly recommen it to just about anybody. As a webmaster, it will help you not just with Google, but all search engines. As a developer, it has a lot of detail on the API and several ways you can use Google you never thought of yet. And otherwise, the search techniques it teaches are pretty amazing.