I just looked at some GoDaddy statistics and was very pleased to see that ProStockMaster software run 75,568 times in the last 14 days. It makes a very respectable number of 5,397 in average runs a day. I do not know how many images were uploaded at each run, but the guys in the stock agencies definitely can collect this information looking for "ProStockMaster" user agent HTTP header in their log files.
Assuming an average of uploading 5 images daily at each run, we end up with 377,840 stock photographs uploaded with ProStockMaster just in 2 last weeks.

Nice, is not it?

We have the number of runs here because each time ProStockMaster starts it makes a request for the new software updates to www.prostockmaster.com. These anonymous requests are collected by GoDaddy stats and that's why we can count how many times the software has been started.