I'm not disagreeing with anyone. I just wanted to point out that sharing Amazon accounts aren't ideal. Sharing and Amazon account works fine if you are a parent sharing an account with a spouse and children, but beyond that it is not a lot of help. I have a Kindle, and as of this Christmas so will my mom and my sister. However, we can't really share an account because we are all adults that buy our own things, and an account is tied to a single credit card number. (Well if it were tied to my sister's credit card number then I suppose that would be ok.
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I think it would be nice if we actually could lend ebooks with one another.