Originally Posted by drexl

Assuming you set the "track" parameter, you will be able to see the returning visitors in the coming days/weeks. Some of them might sign up.

I bought popups to another company (not juicyads) some while back and didn't get a single returning visitor! That's how you know you got scammed, they just billed you for bots or just incremented counters.

I don't recommend buying traffic, there are many man in the middle and they keep the good inventory for themselves, obviously!