The abuse is not the not-depositing money, the abuse is the automatic faucet usage. Hell I am quite certain if you did automatic script that claims faucet for you just for your one account even that wouldn't have been a huge problem.
There is a reason why freebitco.in is still running strong when all of the faucets we had in the past died off because of many factors which include google getting rid of the advertising option for faucets and then the other major reason was the faucet abuse and most of the sites shut their door simply because of the abuse and i am sure freebitco.in have the security feature to avoid those abuse and ban those accounts before withdrawing the money, if not they would not survive this long.