The books I review are ones that Juliet and I read together, so you know that they are kid- as well as mother-approved. There have been several times that I have thought a book was great, but Juliet did not, so I did not add it to this site. How do I know if she likes a book or not, you ask? Here's my secret method:
I read a book to her and I look for one of the following reactions:
A. She sits quietly, listens, laughs, interacts with the story=she likes it.
B. She shakes her head back and forth vigorously, slaps the book out of my hand, screams, and/or begins beating me over the head with a stuffed unicorn=she does not like it.
It's a pretty official method and it's easy to use. Try it sometime. I think you'll be pleased.