事实上，恶意批评因为一个相当出乎意料的发展而受到了遏制：客户可以就服务发表观点，服务提供者也可以为客户评级，Uber就是这么做的。
Indeed, obstreperous critics are being challenged as a result of another, rather surprising development: while customers may express an opinion about a service, the service provider can also rate its customers, as Uber has demonstrated.