On important thing . On pbmining (and on the other website also i think..) you can not sell back your miner . it's a five years contract. You must trust the website and a have faith in ROI.
yeah see i can do that i like to have option to sell on market when i want to. I mean cant say cant sell PBmining because i see people selling accounts on ebay lol. So they find a way around it just a hassle to do it that way if you ask me.
Yes that's correct but it's full of risk , and you can end up with nothing .