Bridge Ratings has found that 4.8 million persons have at some time during 2005 downloaded a podcast, up from 820,000 in 2004. They also predict that by 2010 podcast audience growth is expected to reach a conservative 45 million users who will have ever listened to a podcast. Aggressive estimates place this number closer to 75 million by this date. Downloads are nice but what about subscription data guys? Full data can be found here. (Via Frank Barnako)








