Here’s an interesting story on eMarketer on podcasting (via Sundog). They have a nice graph showing how there were only 1 million radio listeners who downloaded a podcast in 2004, 5 million in 2005 and it’s projected to be 9.3 million in 2006. They project on up to 62.8 million in 2010.

Interestingly they also quote some recent research (by Podtrac) that shows that although 78 percent of those who have downloaded podcasts are men, women are more likely to have listened to a podcast in the last week. I guess that means that us men do the work and the women do the listening. Sundog blogger Greg says in his post:

My wife and I recently took a thousand-mile car trip. About 80 percent of the time we listened to audio books or podcasts that had been downloaded to my iPod. Many of my friends listen to satellite radio when they travel. Right now we’re a minority, but as we see above, that minority is growing rapidly. The world is changing. Marketers had better change and adapt with it.

This year, 30 percent of all new cars will offer iPod integration. I predict this will rapidly approach 100 percent.

I couldn’t agree more.