Can it spy on me
What does it know about me
Can I control it
Company shows it cares about its customers
What could happen if something went wrong
You forget to change the default setting of no passcode for this device and leave it laying around. Someone gets on and buys the complete set of Game of Thrones, Harry Potter, and Hunger Games books, starts reading them, and you never see your Kindle ever again, just the bill for the books.