My Personal Experience on HashOcean:
My Total Investment:
0.04245 BTCMy Total Cashout:
0.05337 BTCDate Joined:
29th November 2015ROI:
125%It maybe a Ponzi, buy you have to decide if you want to take the risk or not! ... Also, start small and only invest what you can afford to lose. Period.

Agree, my situation is even better cause I've invested sooner and bigger
Invested -0,25493000 11/05/2015
Payout 0,45329960
Profit 0,65775699 (Includes BTC used for new buys)
Net Result 0,1983696
Daily Average 0,002074943 Profit/DFI
Days from invest 317,00
Total Days to ROI 122,86 Payout/Average
Days Left to ROI -95,60 Invested-payout/Average
Current Power 453 KH/s
At the same time I've lost 0,50 in hashnest, now I'm recovering slowly using market to buy/sell GHS, but as I've see in cloud mining you have "honest" with ensured negative profit and scammers with theoretical positive profits that sometimes becomes true and sometimes they run away with your money (I've earn some with hashocean, scrypt.cc and lost with ltcgear, hashprofit, zenminer) but always lost with genesis, hashnest and at that time zenminer suposes to be in the honest group.
So cloud mining is not an investment, it's a lottery, if you pick the correct scammer at the correct time you may win, you will loose in all the other cases.