This book makes a good job in cataloguing and exploring a wide range of search applications - from the most notorious generalistic search engines to some peculiar, more specialistic,services - , and above all , in expliciting the human behaviours
that trigger the search and the approval (or disapproval!) of results by the users.
At the same time, the authors try to give a perspective to the future of search, from the starting point of the actual, most evoluted implementations, such some of the new modalities we got today in the “mobile” field.
Its writing style is quite smart and easy to follow, and the book also succeeds to keep a good equilibrium between textual and visual contributions.
If I have to find a “con”in all its “pros”, I'd say that the authors didn't feel the need to go more in depth , leaving to the more technically oriented reader the need to enrich and fulfill the reading of this book with other resources such (not casually,I presume!) titles in the O'Reilly catalogue, like “Ambient findability”, from one of the authors of ”Search Patterns”, the influential “Information Architecture for the World Wide Web” or the many books exploring the various facets of interface design.