Amazon.com is a great big database concerned with lots of stuff - books, of course, but also tools, clothing, films on DVD, kitchen equipment, and lots and lots (and lots) of Harry Potter paraphernalia. Want to wear an Anna Kournikova exercise brassiere while juicing celery (presumably with considerable vigor)? Amazon can help. Need a cricket bat, radar gun, dietary fiber supplement, or vibrasonic molechaser? Amazon has what you need. Which is all great, but the real value of Amazon.com isn't that these things are in the database. The real value of this site lies in the information about all that stuff - reviews, sales rankings, recommendations, and the like - and the large number of ways to access it. Amazon Hacks explains how to get the most out of Amazon.com as an ordinary customer with a Web browser and as a software developer interested in the site's considerable collection of Web Services.