Trey, you are so right, I hate that word, so many people I know who are internet savvy don't listen to podcasts because they "don't own an iPod"
A podcast is an internet broadcast, RSS is useful for automated downloads and iPod's are one of many ways to play a show.
Songwritten, is that a serious question ? Would you say that getting played on the radio would be good for a band - of course it would. If you were played on my podcast (or many others) you would be exposed to 100's or 1000's of new listeners. Most podcasts also link to your site from their website which is something some random radio station would not do. Podcasts are usually worldwide, not local like most radio. Any new band should want to played anywhere, never mind if it's 10 listeners or 10 million.
Tony