I just found the following on your website today (Mar. 05 2008):
Intertops.com will credit the Affiliate referral commissions on a weekly basis, earned by him/her in the previous week, by the Wednesday of each week. All payments will be due and paid into the Affiliate Partners Intertops.com account every 4 weeks. If the account is in a negative position (e.g. because customer winnings have exceeded customer losses) the negative position will be carried over until the following week. The Affiliate will only receive a payout when there is a positive balance.
Are you back to carrying over negatives or what?