Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Indispensable Marketing Tool!

If you are ever only going to buy one book on marketing, then this is the one. This is the most complete reference book I've ever used with lots of exciting ideas and thousands of references to other sources. No matter how big or small your company may be, there is something for everyone. The easy access reference tabs and the included CD make this a tool no marketer should go without.