The way the system works is you invite a user by their email address, you can do this as many times as you want, the system then tracks this email and if the user ever places an order for FPSCR you and anyone else who invited that user gets a pledge even if it is a year down the line.
This is a fairer way than doing referral links as it shows that you have not just posted a link on a forum signature hoping a random person buys with it. You are actually inviting people you know and they will trust your word on FPSCR. We also use email tracking so everyone that invites a user gets a reward for doing so, this way no one loses out from a referral link system that only credits the one user although others may have been equally influential in persuading the user to pledge.
I hope all that makes sense and helps you out a bit.
They do not even need to read the email the system sends you just enter their email and from that moment any order they place for FPSCR will count.
The system used for this scheme was specially written just for this job and is designed so we can offer more items in future as well for additional emails you invite.
Windows 7 Pro, Intel i7 3.8 GHz, 16GB DDR3, NVIDIA GTX 780 4GB Superclocked