Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Simple but excellent

I love this book. It is so simple. I couldn't count how many books/articles I've read on this subject, and while it is the same stuff rehashed, it's better. And it works! I used his formula to buy an outfit for a get together. (my husband only gives compliments if I coax them out of him) My husband took one look at me and told me how great I looked! Go figure!