Instruct: Classify Amazon reviews into positive or negative sentiment
Query: rehash, recycle and nothing new

"Dr. Joe" has some good ideas in this book but he beats them to death by recycling his concepts - it's almost like reading a freshman's term paper where they read the Cliff Notes and really don't have anything significant to add to the discussion, so you get a big SNOW job. I've read other works by the author and this is a weaker effort. Save your $$$.