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

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
Wow, this is one of the most useless "books" I have ever read. Based on the title, one would expect some sort of insight into a career search. I found this book to be no help at all. It looks like the author lifted a few job ideas from the government job handbook and wrote a bad Clif's Notes for them. If you want guidance, please do not waste your time and money on this drivel. I agree with the previous reviewer.... I feel sorry for anyone that actually paid for this book.
Answer:
Negative