I have a running website but new , i have created it about 3 month ago .
I need referral system in My site . If an user create an account , Then he will get a referral link .
Then he will publish this link and send this link to his Friend .And if any visitor join in my site via his referral link , Then he will know that how many referral user he has managed ..
My budget is very low , and you will must complete within a day , Because it is a running site ..