Internet radio is sometimes referred to as web, net or streaming radio. It’s a form of audio broadcasting over the medium of the internet as opposed to terrestrial radio which uses land based transmitters. Internet radio shouldn’t be confused with podcasting which involves downloading prerecorded content after the fact. Many internet radio stations have real world equivalents while internet only stations tend to be independent. Internet radio stations can be accessed from anywhere in the world, allowing geographical and cultural boundaries to be bridged which is a big advantage for the medium and generally cover the same the spectrum of content as terrestrial station.
Limiting factors for internet radio are the quality of the sending and receiving internet connections. Where insufficient bandwidth or an unstable connection at either end might result in buffering or disconnection. Buffering happens when an internet connection isn’t fast enough to keep up with the source of a stream and has to re-synchronize. Terrestrial radio on the other hand can suffer from problems of interference or signal strength.