how popular are podcasts really?

The Pew Internet survey says that 6 million people have downloaded podcasts. Here’s some discussion about why that number is probably somewhat, or even very, overstated. [rc3]

audioblogging vs podcasting vs online radio

Greg Schwartz lays down some science and vocabulary about the different ways we can get regular audio content via the web. Don’t miss the list at the end, which is easily the best part.