Yes they are a scam because they RAPE you with absolute bullshit fees. Out of $271 I have earned so far in BTC they have charged me more than $200 in "management fees". Which, by the way, are not mentioned anywhere when you sign up.
This is the first and only of such report. Are you saying that you have mined $271 to date and only received $70 if your wallet? If so please send me a screen shot of your ledger entry page.
Thanks