Yesterday Creative Commons was announced. I just browsed the site quickly looking for a spec describing the XML format they're using. Megnut suggested that if blogging tools make it easy for people to declare their intentions and automatically generate the XML, that would be a good thing. I'm into helping if I can. First I gotta find the spec.
Let's say the spec emerges. One of [Userland, Blogger, LiveJournal] implement it and make it easy for their users to use this. Thanks to the very healthy competition in this space, the other two follow up within a week. (This assumes a simple "Creative Commons" spec, which is likely.) Bam; in two weeks, quite possibly less, a new XML standard has been rolled out to thousands of sites. In short order, tools that use this content will emerge, too.