Within the past week, I created a book-style index of everything I’ve ever written on this website, going back to 1999 (see the errata for implementation details). I’ve been thinking about doing it for so long (years), that when I finally decided to do it it took about an hour.
I like this application of the index format, because it allows you to re-explore things after they drop off the front page. It keeps things from disappearing forever. And I’ve never seen anyone else do something quite like it on the web before. But also, like any keyword index, it acts as a low-focus source of ideas; a way to connect random things and concepts; a little spawning-ground of serendipity.