I have not yet decided whether I will make an investment to buy hardware to undermine bitcoin (asic) or Altcoin (rig gpu); in the meantime I had decided to try to exploit the power of other machines that minino in my place, in essence of a rental car.
I took a look at the Mining rig rentals site but I realized how inconvenient it is, I'll explain better: I chose a Scrypt rig (so to mine litecoin) and I compared the daily cost of the rig with the daily revenue in terms of MH / s on this site https://www.cryptocompare.com/mining/calculator/btc?HashingPower=13&HashingUnit=TH%2Fs&PowerConsumption=0&CostPerkWh=0.
in practice I'm always going to lose.
If the site still exists it means that someone uses it so I'm here now to ask you where I'm wrong.
I close with one last question: Has any of you ever tried a cloud mining service? I have seen that only Genero has remained on Genesis-mining, while BTC is still available on Minergate. According to you are profitable services?
Thanks in advance for your reply.