Pandora Radio

Lately I've been listening to pandora radio (www. pandora.com). It creates music stations for you based on a song or band that you like. It does some computer algorithm thing and decides what other songs are similar to the band that you chose. I asked for a U2 radio today. The first song it played is Making love out of nothing at all by Air supply. I don't see the connection. Maybe just that U2 is old? :)