Are You Podcasting? When Will You Start? (Now?)

eMarketer estimates that there was a 285% increase in size of the US podcast audience in 2007, a growth to 18.5 million.

Furthermore, that audience will increase to 65 million in 2012. Of those listeners, 25 million will be “active” users who tune in at least once a week.

With numbers like that, advertisers are starting to take notice.