Footy Addicts controls online payments to avoid people collecting money, and then not hosting a game for the players. 

For example: a Game Host creates a Pay in Advance game and the cost is £5 per player. 10 players sign up and game is set. However, The Game Host doesn't turn up to the game and the pitch has not been booked.

In this scenario, as we can control the online payments, players would receive the £5 refund and the Game Host would be marked as unreliable.