Relying on Product Reviews During Black Friday? How to Spot Real Ones From the Fakes

Relying on Product Reviews During Black Friday? How to Spot Real Ones From the Fakes
An online shopper searches Amazon's website showing holiday deals, in Miami, Fla., on Dec. 12, 2016. The Canadian Press/AP-Wilfredo Lee
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You see an affordable product with thousands of reviews and an average rating of at least four stars. Add to cart?

Maybe, maybe not.