Integrating blogs and DMOZ
The k-collector project is working on integrating topical directories with individual MovableType posts, in an RSS 2.0 feed. DMOZ currently publishes the category list (as RDF), so it'd be possible to assign DMOZ categories to posts on my blog, using DMOZ as a topic cloud.
Over time, I'd assign multiple DMOZ categories to the posts, and then publish the posts in a DMOZ-like tree structure somewhere on my blog (recursive tree-surfing html-producing plugin, I suppose). Eventually all my posts would be heavily weighted with categories, and the linking would be good. "See the other 4 URLs in this category at DMOZ", for instance.
Building mappings between one category and another for the major portals would provide the ability to speak everyone's category structure; then you add automatic feedback routines, and you've got content that publishes itself to the indexers for review. End-to-end Internet publishing, with the categorical depth of Usenet.
I'd like to hear comments on this one; if I'm dumb, say the word :) I'll be happy to listen, and respond.