Referral rewards

[jedateach]

Members could earn store credit by referring others to the shop via a generated code. This code could be entered at the checkout, or be incorporated into a link.

When an order is completely paid for, the commission can be worked out, and credited to the referrer's account.

Adding a discount to the used code would give more incentive for people to take the referral, however this would come at a greater cost to the shop owner.

This may be suitable as a completely separate submodlue, or possibly even a silverstripe module.