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by sacado2 917 days ago
If you do that, malicious writers will have bots buy their books, get the precious "verified review" badge (and bumping the book's ranking at the same time), and give the book raving reviews. At that point, it just becomes an expense, probably more efficient than buying an ad. In the meantime, legitimate readers whos didn't buy the book by themselves won't be able to comment on it.

Not sure it would really improve the signal to noise ratio.