Podcasts allow listeners to take their interests and passions on the go. Being able to download and listen to a podcast is such an easy way to keep one's mobility in tact while still tuning into a channel to keep up with new/events/etc.
An example of a podcast I've enjoyed listening to is, "The Nutrition Diva: Quick and Dirty Tips to Eating Well and Feeling Fabulous." The Nutrition Diva posts around 25 minute podcasts about nutrition and significant topics regarding health and fitness. Being able to download the podcasts and take them on the go with me through my ITunes on my phone.
Podcasts are so easily accessible and a fun alternative to listening to music in the car or while traveling. They bring information to various demographics and can connect others through similar interests. Podcasts are a new tool that can help spread information and educate interested, key publics on specific topics.
http://www.podcast.com/Health/Fitness-and-Nutrition/I-2358.htm