A system for implementing a performance-based customer referral program includes a referral tracking system capable of tracking referrals of users from participant sites to a retail site, and capable of determining whether such referrals result in purchases on the retail site. The tracked referral activity may, for example, be used to determine performance-based commissions to pay to the participants. The system may also include an enrollment system that partially or fully automates the task of enrolling new participants and their sites in the referral program. In addition, the system may include a report generation system that provides the participants with activity reports regarding the referral and purchase activity attributable to their sites.