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How Many Reviews Are Too Many?

| Does the 3,250th review of Harry Potter and the Deathly Hallows have any influence on an Amazon customer? An Economist article says it does. In fact, says the article, the more online reviews a product has, the more likely people are to buy it. If reviewers know the reviews they write have influence, it may help answer Levitt’s earlier question: Why do so many people post reviews on Amazon? So what motivates blog readers, whose comments often number in the 100’s on this blog? One Freakonomics reader, Conor Lennon, recently emailed to say that he rarely bothers posting a comment unless he knows it will show up on the first page of comments (there are only 25 comments per page). He wonders if other commenters on this blog feel the same. [%comments]