I've been using Pandora since its inception. One of my favorite stations has always been Steve Miller band. Its always played what you would expect: 70s music. But lately its been stepping out of that decade and playing bands like smashing pumpkins and chili peppers. Now, don't get me wrong, I'm digging it, but found the sudden changes to be unexpected. Other stations have been doing the same. Has anyone else noticed the changes? If so, are they good choices, or do you find yourself hitting thumbs down quite a bit?