[boultonmark]

Update from CaptainTrain in the comments in my reply to where do you get the data:

"It’s magic. :) To be honest, this is a strategic topic we can’t comment on. I’m sorry."

i.e they have it via a backdoor - someone is giving them it who shouldn't or they're scraping it.

[joelhaasnoot]

The backdoors aren't hard to guess BTW - one noteable source is reverse engineering the HaCon offline products.