Think of how the Teletext service works - a system of pages of content accessible by numeric entry, no links, no hover, no pointing, just numeric references. That works for the input medium of the television remote, but I wouldn't write it off completely as something that would be beneficial to the web. Teletext posed a few advantages, if you knew the index number you wanted before visiting, eg 777 for the sport section, you don't need to find a link to go there, the navigation is independent of your location, like a user-friendly command line. I wouldn't use it as a sole means for navigation, but as a complimentary system? Perhaps. The accesskey attribute gets you halfway there although it doesn't provide location independence. JavaScript?
