Maybe, but at the same time, your referrals might be similar to me, as in only having 4 cents, you may have been lucky and received a lot more emails than the rest of your downline!!!
Just looking at the site now, level 7 awards 3%!
So they'd have to earn about 33-34 cents to show up (thats if my Maths are right, lol)...
How have you got so much, you been using the "Paid-to-click" on the site?
Oh and another thing, I've had sites where I've had referrals for months on end not showing any earnings, the big problem is, not everyone is as prolific or bother clicking on the links, actually I'd say that the majority of my referrals in most of my programs have never bothered clicking a single link

I have a feeling that some of the ones who get massive downlines don't click-through that many links, they probs just click one or two a week to keep their accounts intact and live off what their referrals earn them!