That is the reason of my question. btcbet it is not too late for you! If you do it just stop it now. Your site works really good and you will make more money playing fair!
btcbetcc do you also participate in betting sometimes?
that's an excellent question .... 
btcbetcc do you also participate in betting sometimes?
At the first day of opening we made bets from users that have been created for testing to test the service. Last time we tested when we changed the amount of the minimum bet. We receive price from poloniex.com, so we cannot predict it, and if we make bets we wins and looses as anyone else.
We get messages about robots that bets at the last moment, and we are thinking how to avoid it and if we need to do so. We look at the users who play on our site, after API we have a lot of bots, some of them now make bets almost every period, and we cannot prohibit this.
One of the issues is to stop receive bets randomly from 1 to 10 seconds before the end.
Another 'problem' is that we receive messages mostly from the users that loose, those who wins just withdraw coins and don't even chat.
The issue that I raised was not one of you guys being able to predict the price.
If you are betting on both sides you can go with profit since you get the commission fees either way. And you will win the amounts that other users are betting. Could be impossible to prove but that is what one user sent me with some tangible proof. I am yet to make up my mind about this as it feels a bit unjust towards you guys to make these accusations but it is what it is.