XY Gaming rewards you for life of the user that signs up to XY Gaming with Coins. When a friend you have invited plays their first challenge, you will receive 200 Coins, and they will receive 500 coins. Then for every challenge, they play on the site you get an extra 10 coins per game they play for life.
You can track all your friend's progress and lifetime earnings from inviting friends under the “Earn Coins" and view your rewards by viewing the "Invite A Friend" tab
Note - XY Gaming will in the future advertise reward promotions for prizes or bonuses for inviting friends.