Rated 5 out of 5 stars

puts an ideal-sized rating bars on every video thumbnail on every page (not incl. the thumbnails that appear at the end of a video of course, since it's flash). great for picking videos from search and even from video-page side-bar. just a shame it's doesn't support Firefox 20 at the moment, so I replaced it with "Youtube Video Preview", which has also 3-frames-preview.

This review is for a previous version of the add-on (