Podcasting definition - http://en.wikipedia.org/wiki/Podcasting

Podcasters of note

Teen Podcasters - http://teenpodcasters.com/

Adam Curry - http://live.curry.com/

Dave Winer - http://morningcoffeenotes.com/

Nerd News Radio (from the Boston Area?) - http://www.nerdnewsradio.com/

Gear

http://weblogs.about.com/od/podcastingaudioblogging/a/podcastingtools.htm

Technique

http://radio.about.com/od/podcastin1/a/aa030805a.htm