The General Settings allows you to configure the following properties:
When the program is on, the following changes occur on your store. Correspondingly, these changes are not activated if the program is off.
Referral Points. You can reward customers for referring other customers. Referral points can be awarded based on a flat value (e.g. 75) or percentage value (e.g. 25% times the order amount). Points are awarded only once per referred customer, and only if the referred customer makes a purchase during the visit to the store that was initiated by clicking on the referring link. Existing customers will refer other customers to your store by using the Tell a Friend feature. Make sure that the feature is turned on under Store Settings > General Settings.
The link included in the Tell a Friend message will contain the proper code to enable your store to track the referral.