If you don't actually read the book, don't fucking rate it 1 star.
If you don't actually use the product, don't fucking rate it 1 star.
If you don't actually see the movie, don't fucking rate it 1 star.
If you've never been to the restaurant, don't fucking leave bad reviews.
Do these people not think? Negative ratings and reviews hurt people and businesses. If you were actually involved, and have a real issue or problem then yes complain. But to say I've never read this book, I give it 1 star damages an author's rep and confidence.
I hate ignorance.