Broaden your audience by exchanging promos with like-minded podcasters. 
If you have 500 listeners and another podcaster has 500 listeners, you can both benefit by reaching the audience of each other, by possibly ending up with 200-300 new listeners.
This FREE advertising is a great way to boost your podcast listenership.

eMarketer has published a report suggesting podcasting numbers will swell to 10M by 2010.  However, I think it’s a little early to forecast numbers of this magnitude that are to be reached in 4 years.
And, I really can’t judge the validity of the report because it’s almost $700 to download it.  If you’re so inclined, [...]

The Ricky Gervais show becomes the first major podcast to go from completely free to available only on a paid basis.
Audible will charge $1.95 per episode or $6.95 for the season, which will include at least four episodes by the creator and star of British television’s "The Office." Audible’s exclusive deal also runs for a [...]

The ministore, Apple’s new feature-turned PR disaster has been modified to reflect blogosphere concerns.  From BoingBoing:

The MiniStore was switched on by default, without any notice that this service was collecting your information, nor which information was being collected, nor what Apple did with this information.
The new version of the iTunes 6.0.2 installer pops up [...]

Podcasting got a large boost when iTunes incorporated podcast features into their version released last summer. iTunes is overwhelmingly the most popular way to listen to music and tunes on the web.
However, as it turns out, they may be guilty of spying on you without gaining your consent:
What it also offered, but didn’t bother [...]