Games like Guitar Hero and Rock Band rank players based on how good they are at replicating a musical performance,while Herd It gives props based on how good they are at predicting the "herd's" opinion on the style, emotion, instrumentation, etc. of music. All of this happens in realtime via Facebook -- check out http://www.blogger.com/www.herdit.org.
They also embedded the music search engine YouTube video.
IGN is a leading Internet media and services provider focused on the videogame and entertainment enthusiast markets...lots of interested eyes!