Just on CNN
It seems to be only a matter of time that online Hotel & Restaurant reviews can only be done when in the possession of a proof of stay ( reservation number or equal too). Obviously business owners and their friends / families members can still review their own properties but it will keep various other polluters off like; competition, ex employees or others that hold a grudge.
My 5 cents worth; TripAdvisor jump on the wagon as current review leader and do what is needed in order to have a more transparant system in place.
Renew the Review