You do realise that this is a HYIP/Ponzi right? There is no way that 1+% each day is remotely sustainable or viable - your simply being fooled. My advice is to withdraw your BTC ASAP or at least don't promote a scam. Arbitrage is fine my concern is your not the one skin it or in control your simply taking their word with no proof. Either way don't come complaining when they run away with your money.
I have heard that comment already here. Yet, there is no single evidence of them being scam and they operate about 5 months, personally using them for 2. I made 2 withdrawals so far and everything was fine. Regarding your comment, there is no way to reach 1%, this is not true. If you include smaller exchanges, the difference in price can be up to 3% on some occasions. Factor in daily price volatility where BTC trading bots can get you a lot of money simply by buying and selling BTC. Also, there ve been days where their result was negative. Having said this, I have clearly stated in my posts the risks of this and any other Bitcoin related investment. Let me refresh your memory, Mtgox - RISKY, buying cloud hashing - RISKY, bitcoin gambling - RISKY, bitcoin securities - RISKY, bitcoin exchanges and trading - RISKY, bitcoin arbitrage - RISKY. So please, this is still young service, only time will tell how honest they are, invest small amount, $40 if you like and withdraw often until you reach ROI.
Thank you for your advice.