We recently became obsessed with a strange, select club:The top rated reviewers on Amazon. These are ordinary people — not Amazon employees — who write and record hundreds of astonishingly detailed reviews on Amazon. At this moment, Amazon’s number 1 reviewer is Michael Erb (Amazon screen name, M. Erb). He’s has reviewed more than 850 products, ranging from telescopes to facial wipes. On today’s show, we talk to Erb and another top reviewer, and we try to figure out: Why do they spend so much time and effort reviewing stuff on Amazon?