That is martingale system. You should not have using this system or tip in order to win for future bets. It's because in freebitco.in the game wins are randomized like other games.
Martingale system just will kill all of our fund we have.No matter how big our fund,we will lose all of our fund.Its jist a matter of time.
Martingale is not a good strategy to use especially in freebitco.in since their dice game is not really provably fair. It will just going to eat all of your funds if you do it in the wrong gambling site. I wouldn't recommend freebitco.in for dice game but they are a good faucet site.