Someone is pushing them here I saw another thread with it as listed as good investment cant seem to find it but had referral in it. Was like a thread voting on what was good. But avoid hashocean... there is no reason to go there. Anyone that guarantees profit is not a legit cloud mining site they say "Return on investment within 5 months." so... not legit as mining is not a sure bet.
If you want to go cloud mining really just go to hashnest. You can research a ton of sites... and they will come out scams on almost all. Hashnest you get a legit chance of ROI and you can trust them.