Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do not buy this book!!!

This is the single most useless and dissapointing book I have ever purchased. No one, who could have a chance to even flip through the pages would ever buy this book. If the author had any ethical integrity, she would immediately get this book off the market. Those of you who think that this book would have any redeeming value as a "reference"- dream on! Here's an opening line that she forgot to put in her book, "Hello, please wait while I set up my teleprompter".