I spent some time checking out the sleek redesign of the BBCi site today and it has one very interesting feature I don't think I've seen anywhere else.
All of the story links are grouped into boxes on the homepage: "News", "Sport", "TV", "Radio", &c. If you pay careful attention you'll notice that each time you click on a link, the background color of the box the link sat in becomes just slightly darker. Over time this has the effect of visually pushing your most-used sections into the foreground, while sections you rarely click in begin to fade into the background.
Fabio Sergio of freegorifero makes an interesting analogy to the physical world:
How might interactive products show the qualities of a wooden artifact? How could they age gracefully?
