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

I didn't much care for "On The Road" after the first 50 pages or so and i'd pretty much thought that this great "Beat Writer" was nothing but hype, but after reading "The Dharma Bums" I now believe Kerouac is one of the greatest writers of modern times. READ THIS BOOK!!!!
Positive

My husband and I were not able to attend a birthing class, so the doctor suggested we rent/buy a video. We decided on this one, and although the 'teacher' was a bit corny it was helpful. I especially liked that you could fast forward and skip parts! All in all it was a worthwhile purchase and proved helpful to us both.
Positive

In my opinion, the worst book in the series. I read this book through just because I did not want to waste my spent money.do only buy it if you are a HARDCORE Discworld Fan.
Negative