Amazon discounts its mobile devices to sell premium content.

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Actually it became attractive because of the success of elastic enterprises like Apple (mobile) and Amazon (Cloud services) and Google (also mobile).

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More specifically, Bloomberg is reporting that Amazon is exploring a mobile payment service based on NFC technology, which would let you pay for items and receive things like loyalty points using nothing other than an NFC-equipped cellphone.

ENGADGET: Amazon said to be considering NFC-based mobile payment service