That looks a little different....
Their website is missing a lot of info, but it looks more like a mining contract. You send them bitcoin that they use to purchase mining hardware and then you get a % of the bitcoins that hardware mines. It appears to take almost a month to get any return on your investment.
It's not inconceivable--if they use your BTC to pay for 100% of the hardware, and if their fee (3% of the earnings) is enough to pay for electricity, then they are losing nothing on the deal. Doesn't necessarily scream scam to me. (They must have really cheap electricity, though!)