The faceted, messy world of folk/tag/free/ethnoclassification seems to be a natural fit for zoomable user-interfaces, or ZUIs… or Zooeys*.

The latest in Flash-to-Flickr interfaces for Tag browsing by Felix Turner does a particularly nice job of using mouse-gesture, zooming layers and just good, tasteful visual design.

Here’s a grab for the tag "London" for instance:

* Zeitgeistfully, in the new film of HHG2TG, Trillian is played by a Zooey