The lowest price ever tracked today is only 4 cents, or 0.66% lower than the Mt. Gox low. I believe that unreasonable forced liquidations shouldn't happen again after the last algorithm change.
Your model is broken.
It acts often like a base ball glove.
When all logic say's now is the time to buy suddenly your buy price rises far above mtgox price and catches all the people falling for this trick.
Same goes for selling.
Quite often your spread just sits there, covering up all profit.
If this doesn't happen then you suddenly have liquidity problems.
So, either your algorithm is broken or you are not doing this fair.
Yesterday there was a spread of over 1 bitcoin.
That's bizar and totaly unbalanced.
And people have to wait untill your algorithm normalizes.
Often, when there is action, your algorithm just overreacts and covers the profits.
But by the time it normalizes there is no action on the exchanges.
This forum has even invented a term to describe this: Being Zhoutonged
Your algorithm has tons of
hidden risk built in.
Now, the relation between the exchanges and your casino is unknown.
Please make this relation/algorithm PUBIC!.
This will make sure everyone knows the risks.
The risk comes not from the leverage but from the non-stability in your algorithm!
It resonates too much.
I think there is a market for low limit BTC price speculation. This would allow low spreads and lots of opportunity to gamble. 
