Guess I'll give in to peer pressure and explain the rating system I use. :)
1 star -- Diarrhea equivalent. Avoid at all costs.
2 stars -- Thought it was pretty sucky, but it had a few minor pros. If I'm able to finish a novel, chances are I'll give it a two.
3 stars -- Not bad, not amazing. Simply average.
4 stars -- A strong book. One I'll probably read again in the future.
5 stars -- Simply outstanding. Can't find anything wrong with it. One I'll come to again many times over the years.