Hi thanks for visiting the community.if yo give some 1 a sim from your page and they activat it they get £5 credit and you get 500 points wich is £5 on payback
payback updates are 5th ov every month.
payback is earnd bye helping other giffgaffers
payback is payed out 2 times a year jun + december you can only miss 1 payback pay out so you can add more points. wich you can use as credit , send to paypal , or give to charety its a thank you from giffgaff for helping but if you dont choose 2nd time you will loose them https://giffgaff.com/profile/choose-payback-method,,,