For your reference, these are the reasons I attribute a particular rating to a particular book.
1/5 – I got to the end of this book and really, really, really didn’t like it.
2/5 – I didn’t like this, but there are some redeeming qualities and I can perhaps see why other people might like it.
3/5 – This wasn’t bad, but it wasn’t my cup of tea/mind-blowing either.
4/5 – I really enjoyed this, and there were only a few things I didn’t like.
5/5 – This book was awesome and you should read it now and your cat should read it too.