Automatic Bookmark Classification

I had an idea a few weeks ago about using an online directory such as Yahoo or the Open Directory Project to help classify and organize bookmarks. You could connect to a bookmark server, and it would arrange your bookmarks into categories or whatever. Fortunately, the ODP provides their data as RDF, so I was able to parse it and index by URI. The information is now available through a XML-RPC interface. You can find more info here.