[atechnerd]

I always thought that the benefit of services like Spotify and Pandora was to get a band's music to people that wouldn't ordinarily be exposed to it. This in turn would prompt listeners to go buy the band's music on iTunes or Amazon.

Good music is really hard to find. I search around iTunes all the time and come up with nothing. So ANYTIME I hear a song that I like I buy it within the same day (usually the whole album).

For bands that aren't seeing this sort of conversion on sites like Spotify and Pandora, this might tell you something about the demand for your brand of music.