Registering is only to keep track of your Reward Points, it has nothing to do with referrals or not. This is simply do the offers/surveys or downloading apps to your phone and you get paid after you have accumulated enough Points. It's really easy as that.
If that is so, then why are you promoting this site? Or maybe you're promoting your blogspot.com, that's why you didn't post the direct link.
Also, there's an ID which I believe is yours:
d64d0e92e27a49c09bec7b5e97ef7388
Removing the ID from the URL removes your name (killingangel) on top. So basically it indicates that I was referred by you. I can't think of a reason why are you promoting this if you can't get paid by referrals.