Just wondering about all you guys that bough into "hosted " mining contracts, how do you know if you actually mining anything?
What I mean is that I could design a site i.e. bitex.ro , take your payments ,
 and have a simple math formula deduct % as a profit for me and
have the rest divided as a (weekly, daily, monthly take your pick) payments to you.
Taking account of difficulty exchange rates etc.etc.
Zero investments pure profit.
How would you know that you're actually not mining anything?