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

Q: I have had to replace my powerbook power cord twice already. Both times before I broke the bank by purchasing the cord from apple. Big mistake. Although steep in price those things are C-H-E-A-P! This last time i decided to go with the Macally. What a great deal! Much more durable than then apple version. It is also more compact. The only thing missing is the indicator light to let you know if the battery is charging. Not a big deal for such a great price!

A: Positive
****
Q: All of the good things said about "Helter Skelter" is true of the Kindle edition. What's more the Kindle edition has hyperlinked footnotes that actually work and take you instantly to Bugliosi's notes. But the trade-off is that with the Kindle edition THERE ARE NO PICTURES because of licensing issues. The print edition has lots of pictures, but many of the crime-scene photo's are censored.

A: Positive
****
Q: I can't say enough about this book, weather you like SF or not this book is a MUST READ!!! It's more about people/civilizations/political systems than SF but either way I highly recommend it.As for SF it is simply the best SF book ever written!!!!

A:
Positive
****