I stumbled across the Typecast beta and it is awfully close to functionality that I’d really like to have. However, as noted in the app, each time you send the podcast to iTunes, it creates a new instance of it.
I would buy this app if it not only added podcasts (multiple podcasts would be ideal) but allowed subsequent updates of new items posted to them.
Anyway, I wanted to say thanks for the free beta and to mention that it is a worthwhile app, the likes of which I haven’t seen elsewhere. (If anyone is aware of another such an app, I’d certainly be open to trying it.)