Apple has launched a discussion forum for podcasters.  The address of the forum is

http://discussions.apple.com/forum.jspa?forumID=1107

The forum covers some frequently asked questions such as:
1. iTunes has the wrong feed for my podcast. How do I replace it?

2. How do I get my podcast featured in iTunes?

3. I’m updating my podcast, but iTunes isn’t showing any of the recent episodes.

4. Can I tell iTunes to refresh my feed?

5. I want to create a podcast. How do I get started?

This looks like a great resource for podcasters.