[r3trohack3r]

This sign always has the opposite desired effect on me. If I see a sign trading for 5-Star reviews, there isn’t any way for me to tell which reviews were written for a free burrito. So I immediately discredit all 5-star reviews the restaurant receives.

[mellosouls]

I do this anyway, I just don't trust rating systems so tend to remove the top and bottom marks.

Obv not a perfect solution and unfair to those who aren't gaming but over the top 5 star and bitchy one star reviews even when genuine aren't always that representative.

[notahacker]

Even without people gaming or buying reviews the 2, 3 and 4 star reviews tend to be more thoughtful about what is and isn't good about the product.

One of the reasons why the "5* rating or your driver gets fired" norms encouraged by the likes of Uber are so awful.