Ratings: clean, lightweight and easy
The top rating is an average of all of the comment ratings
You can add the_rating() anywhere that has comments attached to it using the Theme editor
You can add ratings to comments in the Twenty Ten or any other Theme by adding the_comment_rating() to the custom comment callback located in functions.php using the Theme Editor
You can edit the CSS for Rate right in the Plugin Editor. Choose "Rate" from the dropdown, then select rate/css/rate.css to edit the styles right in the Editor