For quite a while now there has been an event (mostly in the USA only so far) where Podcasters can goto an event lasting usually 2 days and learn new skills and techniques to improve their shows. This event is called Podcamp. (http://podcamp.pbwiki.com/).
Yesterday at the Podcasters Meetup when Uncle Seth was playing it was announced that there will be a Podcamp event in Second Life. I think this is a brilliant idea as it gives people who are unable to attend such an event due to their location but still can attend through the magic of Second Life. Right now they are in the preperation stages for where its located, who will be there etc. You can visit the website for more information at (http://podcampsl.com/)