There is a chance it might on some occasions but you also have seasoned travelers who go to a place more than once.
Does Hertz reward you?
I am sorry, but when fast food places and the likes of Applebee's and other moderate chains find their way to the top of many TripAdvisor ratings, something is flawed.
TripAdvisor also approves posts before they appear to the public and they will remove negative posts. Places affiliated with TripAdvisor will often solicit your review. I have been asked more than once by merchants on the island and also elsewhere to write a review for TA.