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

[Q]: What am I reviewing here... this gizmo or the supplier, Eforcity? I never received this product after my order! After waiting and waiting I contacted Eforcity several times -- no reply. After a nasty letter from me Eforcity'r reply feigned lacking information about my mailing address!What a cop-out.I told them I would not pay for it, so Eforcity said they'd give me a refund, which has not come to me yet. I bought another product to replace this from Amazon which arrived quickly from Amazon.
[A]: Negative


[Q]: I personally enjoyed ever word of this particular work. Many other reviewers have gone into the plot, etc. so I will not do so here to any depth. This is one of those works of SiFi that will appeal to certain taste, while others may find it not to their liking. There is a great deal of politics (almost Pre WWI European) involved in the story line. As the story covers (all books included) over one thousand years, there are many, many characters to track and keep track of. This is indeed a series of short stories, all linked. I personally enjoy this sort of thing but can see where some might not. That being said, it, the book, can certainly be regarded as a classic in this particular genre and certainly should be read by any student of such. You certainly cannot fault the author's story telling ability and imagination. I enjoyed this one a lot and do highly recommend it.
[A]: Positive


[Q]: Well I took a chance on these. I read previous reviews and believed what they said...Always go with your first instincts. I should have known better. They looked too big in the pictures, but the reviews made it sound like only a tiny part of these ear gels actually went in your ear. So I took a chance on them.I was so disappointed. They come with three sizes, however even the smallest size is much bigger than the ear bud on the Jabra bluetooth device, which was the initial problem. Don't believe previous reviews that tell you that these will solve the problem, they make it worse.I now have the newest, most expensive Jabra bluetooth device that will not stay in my ear. When it is in correctly it is very painful. I am now going to purchase the earbuds that I thought sounded good before I read the reviews. I will update then.
[A]:
Negative