With these hierarchical tags at my disposal, I might bookmark scriptaculous as both web.dhtml and technical.gui. With a deliciously-hierarchical tag display, I might see “tag folders” organized like so:
[+] web [+] dhtml - scriptaculous [+] technical [+] gui - scriptaculous
Used in an RSS/Atom reader, such a hierarchy could also be used to generate OPML with folders that mimic the tagging structure. The user may need to specify the “alpha tag” for a given feed (to avoid the same feed appearing all over the place), but it could be a handy system none the less.
Fairly workable, I think. Feedback, anyone?