Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Duh!

I almost feel dumber for having read this book. I'm not saying that the author doesn't make some very valid points, he certainly does, but those points are common knowledge for those involved in sales. For every valid point he makes there is at least one ridiculous suggestion... Like this one: Stake out a prospect's business early in the morning or late evening to find out what kind of car he drives so you can stick a note on it asking him to call you??? Can you imagine what would become of your reputation if you got caught playing detective? Can we say "ethics"? The book is full of sneaky examples such as that one, so if that's what you're looking for, buy this book. If, however, you desire to become a professional and well regarded salesperson, you should probably skip this title.Another gripe: $15 for 72 pages? That seems a little steep to me. I'm not complaining, I should have noticed that before I bought it, but you might find $.50 per sheet of paper to be a little extravagant.