There are others. RadioIO has a prog station. Then there are yet other methods of delivery like Pandora, Slacker and Flycast that can be setup to play prog music. I haven't listened to enough of all the other stations to say conclusively, but most of them have some type of announcement or commercial. Some even stream at 128k as is.
But it does seem to me that the lack of any form of commercial interruption as has been the case here lately is subjectively to me a good thing. And the almost 40K tracks doesn't hurt either...
