A nice feature to add to the system would be to display the number of votes in the star ratings. Not necessarily each vote but just the summary rating (as shown at the moment) and the number of votes cast. Reason for suggestion is that 5 stars with 100 votes is far more significant than 5 stars with 1 vote (who might be the author !!).
And I will be well embarrassed when somebody replies that I should just look above/below/left/right and it is already there - but I've not noticed it so am suggesting it.