10 Billion Android Market downloads and counting

According to this blogpost on the Official Google Blog, the Android Market has now passed 10 billion downloads.

Not to say that this isn’t impressive, especially with the fragmentation issues (not to mention the different forks of Android, some not even including the Android Market), but I would love to see how many of them were free apps. Not only that, but if these numbers also include apps that were downloaded and then returned. I suspect that they do.

Another point of interest, how much money have these downloads earned for developers?