BBC News talks about podcasting:

However, the same can be said of television, as a surf through the channels on satellite or Freeview will reveal, and this does not mean there is not great stuff too.

The quality of some of the podcasts I have listened to is certainly as good as many supposedly professional radio stations, and as the tools for finding and filtering what is out there improve we will inevitably see new ideas, new approaches and new names emerge.

And a podcast with no listeners may take up disk space, but it is not stopping anyone else doing their own thing, so there is absolutely no argument for any form of quality control.

...via SmartMobs