Boosting that does something useful

As if I hadn't had enough AI for the day, Erika pointed me to a great procrastination tool: Gnod, a site that recommends bands, authors, or movies based on what you tell it you like and don't like. The scary thing is, I think I almost understand how it works. It also has a nifty feature that generates maps to show how similar two items are. (Did you know Matrix fans tend to hate Sleepless in Seattle? Or that Michael Crichton readers tend to love Dr. Seuss?) Combined with iTunes and the most excellent hack MyTunes you can wile away hours discovering new music. If only iTunes let you search across your network of users... then it'd be almost like KaZaA...