50% increase in Internet Radio Usage
11% have listened to an audio podcast (though this oddly included downloadable music, which skews the results)
20% of these are between the ages of 12 and 17
53% are under 35 years old

Now, while on first glance that makes podcasting seem like a very young trend, the converse of those numbers [...]

eMarketer has published a report suggesting podcasting numbers will swell to 10M by 2010.  However, I think it’s a little early to forecast numbers of this magnitude that are to be reached in 4 years.
And, I really can’t judge the validity of the report because it’s almost $700 to download it.  If you’re so inclined, [...]

Think about your own TV/Radio habits, and tell me, are you an ambient listener?
Jeremiah brings up a good point:
I suspect that many podcast consumers are doing other activities besides listning, as a podcaster, how should you respond?
Write your podcast script or notes to match what your audience is doing. In my experience, they’re intently [...]