Satoshimines.com had a very unique concept and you can make good profits from it. Only if you are not greedy enough.
I've been playing this since then. With just small capital though. My technique is just open 3 to 4 mines and then withdraw right away.
Actually good profit doesnt determined by your greediness or not, may be half of them is true, but mostly all gambling games are depends on your luck, not from some method. All method will just be the same, because it is just some gambling fallacy that players really believe what they really think. The result is based on your luck and not from your method or even some huge balance