An excellent, well-written piece by Derek Webb as to why free music is better for all parties involved than iTunes, Spotify, or any other money or ad-driven service.
Giving it Away: How Free Music Makes More Than Sense
And if you don't yet frequent Noisetrade, you need to. Lots of free music, all the time. Read the bios, the "for fans of", search by genre, or stick with the top downloads and find something new to enjoy. And right now, there's plenty of Christmas music floating around. Can't go wrong with free new Christmas music, right?