Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Kindle review

The Kindle was a Xmas gift. It took a day or so to learn all of the features. I still have trouble with Amazon on the billing for new downloads. They seem to default o an expired card regardless of new purchases using a new card. Overall, it is a good device. It's small enough to put into my planner. Yes, I still carry one. The text sizing feature is wonderful and enables me, with my aging eyesight, to read faster. I have the 3G, so I'm able to go online for quick reference to information. The voice feature is nice, but can be a little annoying as you get to the book. It parrots anything that is selected along the way. It's worth the money.