I have site that redirect every visitors to adfly link
my code is something like this

I don't get one thing
at my site
I spoke with adfly stuffs
and they told that my site doesn't brake any of their rulles
So - if you can earn 6,5$ per 1000 visits from usa
And if u can find someone who will send you a 1000 visits for 4$
You will have 2,5$ per every 1000 visits
And I think that they can not see refferer because refferer is always my site
visitor first go to my site and then it redirect him to adfly - they don't know from where that visits are comming.

So can I just buy traffic? Will I be banned? How can they know?