i am fully aware of the cookie stuffing and we have recently addressed this problem;

1.) we use a "return visit cookie" but the referrer in the cookie is updated to the most recent referrer -- this makes cookie stuffing pointless (an exercise in futility).

2.) in addition, when that referred customer of an affiliate registers for a free account; his account is tied to your affiliate account for all future purchases, from all websites and white labels in our network.

bottom line, we want our affiliates to get a fair shot at success ...