I would like to know if any of you have any information related to the amount of Magento installations per version.
At least it would be interesting to know the percentage that is still using 1 and 2.
I saw that before; however, there are 242k sites around the world using Magento but if you sum the sites of each version you get less than 20k...I don't think that info is reliable.
Yes, I know (and I don't think we can get the real info, neither for free).
Another places to look (maybe):
You won't get the Magento versions but some stats.