Topic: Music
This amazing music toy does some kind of alchemy by which you can enter the name of an artist or a song, and it will play stuff that it thinks is similar. Plenty of details about how this works on the site, so I’m not gonna bother going over it here, but suffice it to say that it’s fascinating, and comes up with some surprising and enjoyable choices by bands you’ve never heard of. (Via Radosh.net.)