With U.S. radio streams, I am keeping track of links to Public (NPR/PRI) stations, stations belonging to the Pacifica Radio Network, and gradually adding links to campus and community radio stations.
I am not keeping track of commercial radio stations (I’ll leave that for someone else to do!) other than a few commercial stations that are normally within earshot of the Greater Toronto Area with a regular AM/FM radio. For practical purposes that means the Buffalo/Niagara Falls area.