Yuri Suzuki proposes using graffiti QR codes to promote pirate radio stations. Instead of broadcasting over the air, the audio is streamed directly to the phone whenever someone follows the QR code.
I would think one of the joys of running a pirate station is the overt illegality of it. Granted the FCC doesn’t often go around shutting down even prominent stations. (Except of course, when they do), but simply streaming over the Internet is like setting up a blog that no one reads. (*cough* *cough*)