I managed to get a rakeback deal on my existing FT account because I only had freeroll winnings, had not yet played a raked hand, and didn't sign up throught an affilite.
Now I come to find that FT charges your rakeback account a negative carry over for every freeroll you play in, win or loose!
The claculation goes like this the total prize pool divided by the number of entrants equals the negative carry over.
The only way to clear the negative carry over is to play that amount of raked hands.
So if you are trying to, as I was, to build a modest bankroll from freeroll winnings, don't sign up for the rakeback deal until you are ready to move on to buy-ins.
Also if you have a rakeback deal and play a mix of small stakes and freerolls
and you can't understand why your rakeback isn't what you thought it should be, here's your answer.
Good luck all,