Pandora Radio

Pandora radio is probably one of the most useful musical discovery tools i have found in a long time. Even as I write this, I am using it to find new artists and build up my library. What I'm guessing Pandora does is analyzes the artists, songs, or albums that you like and looks for similar traits in other bands. As soon as I get all my music back on iTunes I can really just downpour music into it, because every time i listen to Pandora, I find at least 10 new, great, bands.
Pandora is the path to musical discovery, they may not have many indie bands, but they don't just spew out mainstream like every other radio that isn't on Sirius. There is a very large collection of music in their library and every band has a bio, written by an All Music Guide editor, and they usually have all of their albums, and almost all of those albums have a description, also written by an All Music Guide editor. It must have taken them a looooooong time for them to be able to launch this site because there is such a plethora of artists and their music.
One of the only problems I have with it is that it won't recognize the time period of the music you like nor the specific genre, only the traits characterized in the bands music. My other main complaint is the adds that pop up after every few songs and that there is a song skip limit, otherwise it's golden. Until something better than this surfaces, I would recommend this to anyone looking to find new music.