Are you saying I can do the following?
1) deposit 1 BTC
2) get 3.01 BTC added to my balance, for a total of 4.01 BTC
3) bet the 3.01 BTC bonus until I either lose it or clear the bonus
4) withdraw my initial 1 BTC, which I deliberately never risked.
If so, then we're back to the bonus being slightly +EV, and risk free. Yay!
Sorry it took me so long to understand. I either I'm really slow or the explanation on your site could use some serious improvement.
I've come to the conclusion that that is how they are implying that bonus could work. This is corroborated by this line on the site under first deposit bonus information: "If you do not meet the requirements you will not be able to withdraw your winnings, but you will always be able to withdraw your own deposit amount." However, this line in the T&C has me concerned: "Professional players or players considered, in our sole discretion, to be abusing the bonus system by any means may have bonuses revoked and be subject to further sanctions."
Basically, I'm concerned that they imply that you can deposit 800
BTC and freeroll them but then if you try they will say "we never actually said you could do that, that's abuse we're taking your deposit". So I'd need them to confirm that this is actually allowed.