Highlights the most worthwhile videos on YouTube. In addition to a ratings bar, there's also a blue "Power Meter" which measures people's enthusiasm for videos.
As of
This script places a ratings bar beneath video thumbnails and it indicates the enthusiasm viewers have for videos with an additional blue bar. This blue "Power Meter" is based on the ratio of 'Likes' and total views. In other words, it gives you an idea of how often people have hit the 'Like' button instead doing nothing or hitting 'Dislike'. Even a list of videos that all have 100% 'Likes' will have different Power Meter scores, pointing out the cream of the crop for you.
(screenshots are slightly outdated, but you get the idea...)
The second example is of a rare case when the Power Meter is larger than the green 'Likes' bar. This will happen when the subject of a video is controversial and people are spamming 'Dislike' as a response to the controversy rather than the objective quality of the video itself. The Power Meter acts as a filter in these cases, helping you find the best videos about unpopular subjects.
If you want to customize the thickness of the bars, the colors, the animations, or put the bar above the thumbnails, check out this UserStyle:
http://userstyles.org/styles/102386/youtube-ratings-bar-with-power-meter-userscript
The Power Meter needs an accurate view count to work. If YouTube has paused the view count (301+ views, more votes than views, etc) then the bar will have green/yellow stripes and the tooltip will say "View Count Paused".
I just recently remade the script from scratch, based on something I did a year ago called "YouTube Ratings Bar with Like Strength." I use this script myself so even if just for my benefit, I'll try to keep it updated. Every now and then the ratings won't show up, but I think that's more of a YouTube problem than the script; YouTube has a similar issue with just loading thumbnail images lately. Normally all you've got to do is refresh and maybe scroll around a bit to get them back.
