Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Riddled with errors.

I found many errors in this book, especially in chapter 8, "The Calculating Trader", as well as some in other chapters. Unfortunately, if you don't catch these errors, this book will only confuse you more. If you do catch them, it will just annoy you. Granted, I have the first edition of this book (2005); hopefully these errors have been corrected in the new June 2008 second edition. I gave the book 2 stars because it does have some decent overview information in it.