Many people makes very large money from referrals. I have a friend who got upto three referrals that gambles very high and he will be sleeping and decent money will be hitting his account. Was wondering if those people will keep gambling and he keeps smiling without sweats.
You only see the result, finding gamblers who would sign up under your referral is not easy, your friend is lucky he got consistent bettors signed under him. I have some referrals as well in the past, I'm making money although not really that big, but that time bitcoin as still very cheap, if I didn't spend it, I could have earn a lot of money now.