Personally, I think having a star rating for feedback is not a great idea! My reasons centre around the fact that a star rating is completely subjective, and to save face, you find that most feedbacks will end up as 5* just to save embarrassment. I tried to be a little objective in my allocation of * rating to a couple of feedbacks I just left for 2 models. In my eyes - 5 stars is exceptional, 4 is good, 3 is average, 2 is below average, and 1 is poor. Leaving 4 stars for these models I felt like I was doing them an injustice, as the other feedbacks were all 5* - so really it shows that the feature really lacks value. Sorry - just my 10p