How does a central affiliate program manage subscription commissions? My subscriptions/newsletters are set up through amember - I'm playing with a shopping cart system right now that has a nice affiliate program... and it manages affiliates so that the affiliate ID is tracked for life with the customer. But, I still can't figure out how to manage the affiliates for the subscriptions outside of amember. I would love to find a program that makes it so my affiliates can send a customer to any page/product I have and their ID will be tracked through ALL of my products - including subscriptions.