Radio Business Extension… Adage reports… Many podacasts are restricted to talk due to copyright issues. Not for much longer:

Podcasting, the new medium burst from the confluence of iPods and audio downloads, is advancing at incredible speed as more marketers and media owners incorporate it as an extension of the radio business.

Clear Channel’s Z100 initiative is the first in what it hopes to be a national podcasting strategy that allows listeners to download snippets of popular programming, either individually as an MP3 file or as part of an RSS stream (RSS stands for "really simple syndication"). The podcasts, free to consumers, will be ad-supported and the company is reportedly shopping 15-second spots to advertisers. – AdAge – Abbey Klaassen