Today sees the launch of an experimental idea i've created called Feelz at http://feelz.org
The idea is to allow you to label things on the web with emotions, audience, characteristics and so on - things that aren't easily understood by computers. It will be particularly useful for audio, video and products but through concepts such as "audience", can easily extend to the web in general.
I'm really interested in feedback about this and what direction you think it should or should not take.
You can find the blog at http://feelz.wordpress.com