~snip~
i like the copywriting idea (but appliable to all marketing and even to dating) that all you need is knowing how to "transform seconds in minutes"
this is exactly what they are doing, they hook you with free bets and maybe they even pay you knowing that they'll get much more in the future
I was mentioning services like currency conversion rates, stock exchange prices, etc.
They usually give you a delayed stream of data for free, because it's no longer relevant for right now.
This means that if you were able to predict those values, even 20 minutes, then you would have made bank.