It's taken a long time, but Adbusters finally has something that can be called a victory in its case to set a precedent regarding public access to the airwaves.
From a recent email sent by Adbusters:
"The airwaves are public property – just like city sidewalks or parks. They are a public space where freedom of speech must prevail. This is an inspiring idea for media activists and could pave the way for further legal victories down the road not only on the TV airwaves, but in cyberspace as well."