I've actually been running NiceHash on a couple of machines for a while, but I was curious to see what kind of money could be made using someone else's machine as opposed to burning mine up. I'll have to do some comparison math on profitability of buying a GPU to use versus spending the same amount of money at Genesis.
Edit: I just did the math and comparing the value of buying 1 Rx 480 ($270) I'd get 1/3rd the return at Genesis than I would using the card with NiceHash.