Gnome, Longhorn, Tiger, …, and CC metadata

We are happy to hear that current and upcoming operating systems will have built-in support for application-level metadata. Gnome (Linux), Longhorn (next version of Windows) , and Tiger (next release of OS X) all will be offering some way to store and search metadata for files and applications. Google is also expected to get into search applications on the desktop.

How can Creative Commons take advantage of these technologies to enable CC-aware search and applications on the next generation desktop? Challenge: write a research brief on how to expose CC license info for objects in each major OS or framework.