刚问了shopper，木有referral link。。。只能用合作网站的链接。 Thank you for your interest in our services. We are not offering an open enrollment to our services. However, you can join by making a purchase at one of our partner sites (i.e. MovieTickets.com, Ebay, Pizzahut.com, etc.) and completing our enrollment offer if presented. Please note that a valid credit/debit card is required to enroll in our service. Let us know if we can be of any further assistance. Sincerely, Gladys The Shopper Discounts and Rewards Team