How Many Reviews are Faked

I think many of the reviews you see online are fake. I am saying that the review was written by the restaurant. The bad reviews are not written by the restaurant but by a competitor. If this method is used it is impossible to believe what you read. There might be a few real reviews but which ones are they? Your guess is as good as mine. I wish that you could trust these reviews as there are times the place I am going is unknown by me and would appreciate an unbiased review. Ken Fisher gives good reviews.