You can do this by going to the FITE account menu>Invite a Friend>Facebook or Email. Alternatively you can click the “Watch with a friend” button located at the top of the screen when you start to play a program in the FITE app. When a friend signs up from your invite he/she starts with 20 credits which can be used for a PPV purchase and you get 10. After your friend’s first purchase you get 10 more credits in your account.
There is no limit to the number of friends you can invite!