Instruct: Classify Amazon reviews into positive or negative sentiment
Query: How Do Search Engines Work?

I had long been intrigued by the ability of search engines to quickly lay the world's knowledge at our fingertips and wanted to know how they worked. This book well explained the intricacies of search as well as the economics, ethics and future of the field. Certain computer terminolgy is never explained for the uninitiated--a glossary would have been useful. However, these do not detract from an excellent coverage of the main subject. I highly recommend this book.