A friend whipped up http://twitter.com/kexp_playlist which is a bootleg Twitter using KEXP’s playlist RSS feed, but they should do this officially. I favorite the bootleg tweets as a low-threshold way to say “this song rocks”. Also, it’s a way to get songs played sent to your IM (why you would want this on your phone, I don’t know), then you would turn notifications off when you’ve stopped listening to the station.