Actually, this isn't quite correct. At least, not for a station I've been listening to for the last few years (3-4). It started out based off of OK Go, and has continuously introduced me to new music that I either like or dislike (it does keep trying to get me to listen to nordic death metal). I've learned about a lot of new bands, and have actually managed to develop a (much more accurate than my previous) sense of "current" music.