Instruct: Classify an Amazon review as either positive or negative.
Query: Not sure I'll be upgrading as a result of Amazon policies

Removing previously purchased books from my bookshelf should not be an option. Amazon are you going to break into my house and steal the hard copy books off my shelves that are no longer being published?I already had a beef with the DRM policies but this is unacceptable.I have been a staunch advocate for the Kindle, but not sure I'll upgrade when it dies...will probably opt for a Sony Reader or whatever other compatible competition there might be at that point.Very very disappointed.