Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example: I've read this book with much expectation, it was very boring all through out the book
Solution is here: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this: I'm now on my third charger for my Powerbook (my dad says I'm rough on equipment). Let me tell you, the Macally is NOT it. Like others, it fluctuates between charging and battery every 1-2 seconds and the brick makes weird squeaky noises. After not having a computer for a week and being so relived to finally get this charger, I was almost in tears to find that it is a piece of crap. It charges when the computer is off or in sleep mode, but that's not going to cut it. If you have a Powerbook G4, don't waste your money on this.
Solution:
Negative