I thought this was interesting/pretty neat.
While in China, we visited the bank a few times to have our U.S. currency converted into Chinese currency. After a teller helps you, you are prompted to rate them on the spot using these these neat, little rating mechanisms.
The lady that helped me at this particular time had a 3 star rating. I did see one individual who had a 5 star rating.
I wonder how many stars it takes to get fired.