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

[Q]: You aren't saving any being this adapter. I purchased this for a 12" G4 Powerbook. The power it supplies goes on and off constantly. This can't be good for the computer. It certainly doesn't charge it. Don't waste your money on this Macally adapter. Try to find an original Apple adapter if you can.
[A]: Negative

[Q]: I've been a longtime fan of Mercedes and own most of her Valdemar series. So, of course, I picked this book up at my local store. After wrestling through 50 pages, I gave up! I plan to sell it back to my local store ASAP- this is nothing better than a paperweight in my bookshelves. The worst part is, my boyfriend picked it up and tried reading it. Now he thinks that this is a good example of her work!
[A]: Negative

[Q]: I got this book cuz I enjoyed the Philisopical strangler book. I found this book entirely too wordy. I enjoyed certain parts of the book. I burst out in laughter in a couple of places but it was too little. I could see what the authors were trying to do but it was not enuf.. I liked the strangler book.
[A]:
Negative