Referral is a system that allows you to invite a friend, by your referral code.
Where i can found my referral code: you can found the referral code in your account management.
How to use the code:
asks your friend to written your referral code when he register his account.
So what referral do:
You will received 1 premium point for every (100 LEVEL) gained from a friend who used your referral code.
What if he donated:
You will recieved 20% bonus of his points that he donated WORKS WITH (PayPal)
Should I have to write any referral codes while I register?:
NO!! you dont have to written any referral code IF you don't have any referral code. you can let it empty while you register your account.