Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

I have two long haired cats and these are by far my favorite lint rollers--super sticky and gets the job done in record time.
Positive

If I could give this half of a star I would. I am a big fan of Nirvana, but this was a total disappointment to me. The tracks sounded awful. I felt like I was ripped off in every sense of the way. I took it to a buy-trade-sell place and not even they would offer me anything for it, which shows you the poor quality of this album. A word of advice; DO NOT BUY THIS!!!!!
Negative

Though not a fan of his astrological writings for Vanity Fair, this book is mind-blowing. I have had it for over 20 years (even had it rebound at Kinkos). It has truly helped me reinterpret the motivation of countless people in my life in a way that's helped me improve those relationships. It's a book like no other in the way it helps me make sense of other people's actions by understanding their point of view (haven't read his new book yet).

Positive