Affiliate software can be used as a lead management or ad tracking tool. Integrates with PayPal's IPN system, or can be modified to work with your own payment gateway. Features include multiple products each with up to 5 levels of commission, fixed or percentage, manual addition of new leads, reversal of sales and commissions, screening of new members before adding, download of commission payments into a spreadsheet for further processing or to upload to PayPal's mass payment facility. The ad tracking feature allows you to set up multiple ad trackers per product and see the ROI on your ad spent and your affiliates can set up their own ad trackers.