Membership Sign-up, Discounts and Tracking
It would be nice for customers to be able to sign up for a term-based membership. This membership would be accessible via a monthly, quarterly or yearly fee that will allow merchants to provide a unique code to each customer. This code will be used for discounts off items available for sale or even limit the viewable items, or content to only if you have signed up for this membership. In addition, special perks can be offered, like free upgrade to priority shipping.