Your Custom Radio Station; Last.fm
You feel like listening to U2.
You search for it.
You get a channel with U2 like songs.
You like the song, you can flag it by clicking on the heart.
You don't like it, you can block it, or skip to the next track.
Pas de pub.
A bit later... you need to clean your place and DO THE DISHES..... so you search for Crystal Method and pump up the volume :)