Clicking on the banner gets you to a page in iTunes celebrating this milestone and highlighting some of the popular podcasts:
Now, granted, this doesn't say how many of those subscriptions are actually listened to - I know that I have subscribed to a number of shows that I just don't get a chance to play. Nor does it say whether this is a historical or current number, i.e. are there 1 billion podcast subscriptions right now or is this going back to when it all started in 2005? (In other words, does it count subscriptions which were then later ended?)
Regardless, it's a huge number and definitely something to celebrate for those of us who enjoy the medium of podcasting and listening to (or contributing to) podcasts!
Many thanks to Donna for passing along the word of this milestone!
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