The New Yorker's Nick Paumgarten profiles Francis McInerney, a "top reviewer" at Amazon whose name can be found in the acknowledgements of The Da Vinci Code, a surprise NYT bestseller. McInerney has done over 800 reviews. (Alas, no James Frey; no Devil Wears Prada.) It appears to be a competitive hobby: "other reviewers sometimes create multiple e-mail accounts and repeatedly vote 'not helpful' on his reviews in an attempt to catch up with him. 'As soon as Amazon started ranking people, everything in human nature that�s associated with being competitive came out,' [McInerney] said."

Acknowledged [New Yorker]