Finetune is an interesting new online music station service. You create playlists and combine them with those of others to make up a station. There’s also the inevitable community cum recommendation cum tag thread running through it all, but for some reason it’s quite an interesting thing to play around with. I’m not sure how much extra it gives over something like Pandora, which may not have as many customisation options, but lets you listen to music in your taste-band just as quickly.