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Re:Ask HN: Anyone else quickly losing confidence in Amazon? by rmbyrro on Saturday June 04, 2022 @06:55PM (#31625927)
I can weed out products with massive fake reviews by the stars distribution.

It's a subjective heuristic I developed informally. Never formalized anything statistical.

Just looking at the ration between 5 through 1 stars, I have a high confidence judging whether they bought fake reviews or not.

Re:Ask HN: Anyone else quickly losing confidence in Amazon? by mrlemke on Sunday June 05, 2022 @12:48AM (#31628106)
I also like to look at the two and four star reviews. 5 are obviously bought, 1 could just as easily be an irrational customer, and 3 may just be people who feel lukewarm. Well written 2 and 4 star reviews seem to have the greatest number of people attempting to approach the review objectively.