Yes, It's ponzi site!
We need to stay away from those site, They scammed thousand of peoples every years.
Like Hashocean, I personally have scammed for 100$ in this site.
I don't advice people to invest in cloud mining sites.
Hashocean or not i wouldnt still invest again on this so called cloud mining site because they are just total scams for me. This scheme would continue to pop out everywhere because there are still people who used to put their money on this schemes as i observe on recent post those newbie accounts trying to promote the site is paying. I already know their style on convincing people they may convince some but not me.

Finally some one that isn't talking nonsense. You hit it exactly on the right spot.
The only reason cloud mining and other scam sites exist, is because of dumb people pumping their hard earned cash into these sites as they seriously believe they can make profits.
Some people even know they are "investing" money into an obvious scam site. They think that they can walk out with profits when they are pumping money into that site at the very early launch stage.
Even though noobs invest without doing actual research, I feel sorry for them if they lose money due to scams, but that's not the case for people knowingly "investing" in scams. It's their own fault.