How to repeat youtube video clip?

How to repeat youtube video clip? That is very easy. Just add "repeat" between "youtube" and ".com" at the url.
For example, the original url is http://www.youtube.com/watch?v=uemrcKpUsPc&feature=popular

Then use the method mentioned above, the url will be http://www.youtuberepeat.com/watch?v=uemrcKpUsPc&feature=popular

The video will repeat and repeat.....