Here are a couple of causes worthy of support (in my humble opinion).
At the request of the Recording Industry Association of America, the Copyright Royalty Board has increased the royalty payments internet radio stations must pay. That increase makes royalty payments drastically higher for the internet radio industry than those paid by traditional broadcasters. Even more absurd, royalty payments would be owed retroactively, for music that was played as far back as January of 2006 (which is kind of like the petroleum companies telling me I owe them money for the gas bought last year, because the price is higher this year).
When it comes to broadcast radio, I listen only to public radio, and the occasional sports broadcast. If I want to listen to music, I turn to internet radio such as Radio Paradise. Take a look at their playlist. You won’t hear a quarter of those songs on any commercial station.