There is a 4-star option if 5-star is for something exceptional to you. 3-star and below are considered critical reviews, at least according to Amazon (there is an option to display all critical reviews only). I agree though, the seller/ service provider should not press on good reviews. I wouldn't be happy with that, either. Recently I rated a product on Amazon with a 5-star review, and the seller keeps contacting me to rate the product and if I am satisfied!! It's very annoying.