I created a playlist using "In The Deep" by Bird York (Kathleen York), being one of the soundtracks for the movie Crash from 2004. I heard some very interesting songs as a result, a lot being really great, but they were so rare I couldn't find anything about them on Amazon or iTunes (one of the reasons why Pandora exists is because the creators want people to buy songs/albums via either of those two sites). Google wasn't very helpful either, just showing a few entries of other people's playlists printed out in HTML.

Definitely not a reason to stop using Pandora, I just found that weird, especially considering that is music I would definitely want to keep on my iPod.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram