I LOVE the plugin and would like to use it but I'm having an issue with the css loading late or not at all. I think it's been reported before but I can't find the solution.
When a post loads the related posts below at first look all out of line and the titles below are forced out of their boxes. Then, a split second later the related posts look fine. So, for the first second or so the css is not loading.
My temporary solution is to put the entire YARPP css in my themes style.css, that's the only way the related posts look right on page load. Of course that's not a long-term solution as it's loading the CSS twice.