So... your page says there are 9,415 podcasts being tracked with your service at a minimum of $9 a month, which means you're making a monthly revenue of at least $84,735 and you're promoting that you're paying out commissions totaling... $140?!
That's horrifying.
If these numbers are correct, and you're paying out 30%, then business income generated from affiliates would only be about $467, which makes at most 52 accounts generated from affiliates out of 9,415, which is a conversion rate of only 0.5%.
That 30% may just be for second tier affiliates, too, which would actually make the numbers worse as if the $140 is for say 60% (30% 1st tier+30% 2nd) then income is only $233 = 26 x $9 accounts =
0.2% conversion rate.