Kindle has a secret rewards program that I didn't know existed

Kindle Rewards is a points system that gives you cash for the books you're already reading.
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Amazon Amex 40% deal? Unlocking membership rewards

Unlock Amex membership rewards for 50% off Amazon purchases! Learn how to enroll & use a single point to unlock discounts. Plus, find out about other offers. People in Denmark 'stunned' by Trump's ...