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:
While walking to the counter to PAY for this release, I turned it over to read what extras were included. NONE!!!!! Nothing!!!! I put it right back on the shelf. I am NOT paying full price for a bare-boned release! The greedy corporate thugs are counting on you to buy this, only to wave something a lot more enticing in front of your eyes when sales for this dwindle! Sick of these rip-off tactics!!! I have no sympathy for their loss of revenue from movie pirating! If they treated their customers with respect, perhaps the problem would not be so widespread!!!
Answer:
Negative