It's a review. Customer didn't like something, why not mention it for others? It's supposed to be a service for people like you in the future. The problem is t

It's a review. Customer didn't like something, why not mention it for others? It's supposed to be a service for people like you in the future. The problem is that the scale is now so compressed that 5* means "OK" and 4* means "not OK". 3* is assumed by the system to be a user abusing the review system.