In the “They Did This With WordPress” category (though from about a year ago, sorry) comes Truemors, a Digg, del.icio.us, Reddit clone from Guy Kawasaki.
Calling it a clone might be a backhanded non-compliment, but the truth is that it does a credible job in this increasingly crowded space*. And it’s built on WordPress.
Anyway, add this to the growing list of sites using WordPress in some rather interesting ways.
* My real feeling is that all these sites could probably learn something from MetaFilter, where the inward facing parts are as important or more than the outward facing bits. Have you ever heard of a del.icio.us meetup? MetaFilter has them regularly.