If you know me, I'm a huge consumer of RSS feeds and podcasts, but many of my "non-techy" friends don't get what I do all day and night. They're also confused how my iPod Nano is filled mostly with "Podcasts" and not music.
Commoncraft is a great blog that I subscribe to; instead of me trying to explain to my "non-techy" companions, I point them to these videos.
The simple answer... No. Podcasts work on more than just iPods.
Just watch the video...