Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Often incorrect, hard to read and little practical advice

I had heard good things about this book and I had high expectations when I purchased it. The biggest advantage to this book is that it has lots of "inside" information about Exchange. Much of the "inside" information is of little value other than for trivia. The book is rife with incorrect information, typos, wordiness and contradictions. There were screen captures that did not exist in the released product, so I can only assume given the release date of the book that it is based mostly on the beta product. If you want good technical data or best practices, you may be lucky and find it in this book. But due to the errors I found during my first few hours reading it, I will question the legitimacy of anything I may read in this book. Mr. Redmond should focus more on technical accuracy, solid recommendations, and less on Exchange trivia.