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

My Nomad Jukebox Zen Xtra 40GB only worked for 6 months. I no longer have any sound and the battery doesn't charge. When I called customer service I was given the excuse that it wasn't supposed to be used in the gym. As you all know it is marketed to fulfill your portable music needs. If you can't use it in the gym then it is not truly portable. I know many people who use their ipods in the gym and have had no problems for years. This product has fallen far below my expectations. It is not worth the $300, not to mention the fact that it only has a 90 day warranty. Can you trust a product that is only guaranteed to work for 3 months? No.
Negative

My husband and I didn't have time to attend an 8 hour birthing class at the hospital, so we opted for this video. It was very informative and helped us understand what was happening when we went to the hospital. It was a little cheesy, but definitely worth getting.
Positive

Got this through Amazon for my daughter's superhero party. She could hardly wait to put it on. The quality is OK - some parts (like the skirt) have gotten stuck together and the color has come off a bit. For a costume though, it'll serve a good purpose, and provide hours of fun. The boots a really high. My daughter is tall for her age, but the boots go all the way up (and even under) the skirt. Just FYI.

Positive