Players can now earn rewards for referring their friends.
When registering, players are able to specify the username of the player who referred him.
If the registered player reaches 50 hours of play time, the player who referred him will receive $100000 in-game money.
Furthermore, if the referred player purchases Coins, the referrer will receive 5% of the purchased sum.
This means that if a referred player purchases 100 Coins, the player who referred him will receive 5 Coins for free.
The only rule is that you cannot make accounts and refer yourself.

You can view your referred accounts and rewards given by them by typing /referrals
This program is still in beta version so report any bugs you find in the bugs forum.