Instruct: Classify Amazon reviews into positive or negative sentiment
Query: "HTTP: The Definitive Guide" is a better deal

I bought the "HTTP Developer's Handbook" and read it in about 2 days. I just didn't see a lot of developer information in the book. Then I bought "HTTP: The Definitive Guide" for less money and realized it has lots more information in it. Sorry Chris Shiflett, as much as I liked your PHP security book, your HTTP book needs an upgrade.