What is the use of online RADIO?

Online radio allows people to listen to channels that the conventional radio may not be able to receive. Also, there are "radio stations" that are solely online and more streamlined to tastes and interests. For example, there is an online "radio station" that plays music about comic books all day long. That is something you can't get on an AM or FM station. There are also online "radio stations" that play the old radio shows that were on before TV. Unless you have satelite radio, these are unavailable to regular radio users.