I don't really make a difference. Money is money, whether you earned it by playing, or earned it some other way then deposited, it shouldn't make any difference. It is money, your bankroll, you can either continue to play good and win more, or lose it all. Also, Freeroll winnings are usually small, compared to what you can, and in general, what people are depositing. For example, you win 1-2$ via freeroll, but deposit can not be less then 10. Perhaps, it is the amount of money in the bank, and not it's history..