Okay, call him what you want but you can not say it's a scam!
I am not admin or friends or someone related to that site.
I sing up 2016 and get free 15gh/s, I did not invest until 2018 when I see my balance 0.0077BTC.
I invest 19$ and withdraw my free 0.0077BTC/80$ and get more 20gh/s (35gh/s plus free 15gh/s).
I get free 61$ and 35gh/s, I still withdraw my earning without problem, and for everything I said, I have proof!
As I said, Cmf admit they don't actually mine anything. "VIRTUAL BITCOIN MINING". You can read that on their website.
So, if they don't mine anything, then how are they making a profit to pay you out?
From new investors money.
Ponzi.