I saw this new link on a video of Rick Astley.

http://bayimg.com/image/panokaabf.jpg
It links to Rick Astley's Profile at http://ie.youtube.com/RickAstleytv

I think this is much better than muting videos or taking down videos. So simple and if used on an artists song could drive traffic to the artists profile and raise awareness for the artist.

Here is is in context.
http://bayimg.com/image/panogaabf.jpg

And for anyone curious, this is the video I saw it on. Embedding is disabled because of YouTubes Content ID system according to the uploader, but he made this different video with the same hilarious song by Microsoft SongSmith and Mr. Astley :D

http://ie.youtube.com/watch?v=uByLKeaBmeA

This has been around for about a year I think. Could be useful if a song isn't labeled properly and you want to know what it is.

Great, then could they use the Audio Identification from the Muting of videos to add this to every video?