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

It took me 5 minutes to "play this game" if that's what you'd call it; which all occurs before page 17 (there's very little on each page). The rest of the book goes on and on describing your results. The thing is that it's ambiguous. Without giving it away, I'll use a totally unrelated example: if you said the sky is blue, that could mean you're happy because the sky is clear which would mean the sun is shining which is happy; but then it could mean you're sad because the word "blue" is used to denote sadness. So essentially, what you're doing is drawing your own conclusions about yourself (which I guess could be a good thing if you've never thought about your personality etc). No wonder they don't want you to give it away.