Being an Amazon top reviewer is highly-competitive and kind of surreal. "I get hate mail. I’ve had death threats. But then I also have fans who seem to follow everything I do," Mandy Payne, Amazon's #10 top reviewer, told The Boston Globe's Billy Baker. "It’s bizarre." Payne is part of the company's elite, invitation-only Vine program, which means that she gets boatloads of new products sent to her for free.