Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This prescription is well worth the 20.

This book contains what is sadly missing in many web books (a strategic approach).What, I think this book does fail to do is leave the reader with robust models, with which to develop their own understanding of how to build/apply an e-business strategy. That said unless you are going to read and work though "Exploring Corporate Strategy" by Gerry Johnson, Kevan Scholes you would be making a wise investment in buying, reading and then thinking about the ideas in this book. Good Luck