If you have a look at their website it shows statical data
$25 Billion in transactions
60,000+ merchants
2,000+ extensions
2+ Million downloads
EDIT: just wanted to know where does magento get its data from!?
If you have a look at their website it shows statical data
$25 Billion in transactions
60,000+ merchants
2,000+ extensions
2+ Million downloads
EDIT: just wanted to know where does magento get its data from!?
Often numbers like these are sort of accurate guesstimates done by canvassing users. You should take this up with them directly, I'm sure they'll be happy to help.
Making wild claims like this without proof is also a good way to get sued for libel, btw.
Magento code is open source, meaning you can take a look at it any time. I worked with Magento for 3 months and I didn't notice any pingbacks and generally in open source projects developers avoid pingbacks. Especially in a eCommerce environment this could be a security breach and a potential source of information leakage. I assume Magento data are estimates and not real data provided by any monitoring tools in the code.
Magento is using OSL licence.