We have taken the losses on ourselves and have paid back investors with our personally held coins. All investors who were part of the bankroll at the time of the incident have had all related losses credited back to their investments.
Major kudos for this awesome display of integrity. Looks like 2 or 3 BTC out of your pockets to protect your investors, that speaks volumes.
Swordsoffreedom - Margin is simply a way to increase your effective bankroll. If you take x10 margin it will act like you have ten times as much investment as you actually do and allocate your proportional gains and losses accordingly. So all investors are still splitting the sites profit from gambling.
Salauddin - The bonus is donated by players in satoshi and then is added to the rainbot's pool for rains. The exact formula of how much it pays out over time has not been published to my knowledge.
To all - just a heads up that faucet and quest bonuses have in fact been reduced.