I found the MSMDX project via The Long Tail and Blackbelt Jones. Dig the graphic, a kind of mandala of technologies of cooperation in many-to-many cultural production:

<—click on this for link to larger, original graphic

The MSMDX (Media Streams Metadata Exchange) project’s goal is to create a platform for collaboratively annotating, retrieving, sharing and remixing multimedia content on the World Wide Web.

We will use this platform to discover whether distributed social networks can be exploited to solve the problem of how to generate useful machine-readable descriptions of multimedia content, by tapping into the implicit and explicit metadata flowing between media producers, enthusiasts, remixers, and casual fans. We will evaluate the usefulness of these descriptions by attempting to build innovative media services that rely on them.