If you're looking for a book that can give you insight on how to structure and organize a web site, or any other screen based application for that matter (wireless, desktop, etc.), keep looking because this is not it.
If you already have a good idea of how you want to organize your website and want to take it to the next level, you need a map that can sequence and structure your ideas in a visual format. Its is one of the best ways to gain insight into the overall user experience, help you optimize your architecture and share it with others (no web skills necessary).
This book is a great tool when it comes to looking at examples that illustrate the best mapping alternative for your particular project. As with all maps, the detailed visual examples are a great way to convey the essence of mapping (yes, it is an art).
I've used the information in this book to build maps that help design efficient sites from scratch and optimize the user experience of highly complex mega-portals.
The only thing missing? A section on software applications that will help you to design maps - I use freehand and illustrator which elevate mapping to art form (great for creating an impact in important pitches). A CD with design clipart would also be a useful resource (symbols, icons, pages, etc.).