I have noticed that I am giving more and more books three looks, and this troubles me. There is a huge spectrum in my three looks than is apparent in the number alone. It could be just a notch above two, which I consider a bit of an insult and means that I probably will not read more bu that author. But it's not quite a four, which means to me that I will think about the book often after reading it. I really need a scale of one to ten to adequately rate many books.
To help with this, I decided on a picture system. That way, when I finish a book, I can choose the picture to which I most relate as I think of said book.