I can see how someone would benefit off this, but I don't see the point of a referral. Mathematically, anytime I earn points, if I use you as a referral, you earn the exact same.Therefore, if I spend a set amount of period of time, I earn only half of what you earn because you earn (my cut + whatever you earn from your own searching). Basically, there is no reason to use you as as referral.
I just searched up Swagbucks and I realized that if I spend a long period of time and accumulate enough points, I could buy something physical like a PS3 and just sell it off and make more money. You are using the decreasing price of RSGP + the RSGP:Real Life currency ratio to sustain this which in reality, it is much easier to use the bucks and get the Paypal card or whatever prize you want instead of having you get a cut off us. The way I see it, there should be some sort of premium for letting you use us as a referral.