I’m trying out the Rating plugin because I might end up using it for work. So far, so good!
It looks like I have 5 stars, which is a decent number of ratings, in my book. I use a variation of the Tom Chick rating system:
1 
— Regret
2 — Meh
3 — Satisfied
4 — Impressed
5 — Transended
Stars are a rough summary of the review text, which goes into more detail.