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

[EX Q]: Where to start I have had this for 10 years and it is still ticking that alone is a tesament to how well the thing works. Over that ten years It has traveled with me to over a third of the world. This is to include half a tour in Iraq. It has been dropped and has been trough airport security more times than most people. Because of this I have never had a reason to buy an Ipod. And to be honest for music I would rather use this. Only reason that I own anything like an Ipod is that its my Iphone. So I think that the Xtra is by far the one of the best mp3 player made.
[EX A]: Positive

[EX Q]: this DeLonghi DFH550R heater is an extremely poor product and the customer service is non-existent,doesn't have a physical address or phone number and never gives their names...buyer beware...read their absolutely ridiculous return policy before buying...if you open any package they won't take it back...if you write a truthful negative feedback, they'll be after you like " ticks on a hound " !!!
[EX A]: Negative

[EX Q]: I bought this product to replace the original battery charger that came with my 12" Powerbook G4. Unfortunately, it seems that it only will add charge when I have the computer closed or off. If I have the computer open while the charger is plugged in, it not only doesn't add charge, it also makes the screen brightness oscillate.I wouldn't recommend this product for anyone who needs to charge their Powerbook while using their Powerbook. Wish I would've just spent the extra money on the Apple charger.
[EX A]:
Negative