cex.io is far more nuts, Ill grant you that. In a week, at todays BTC price and using current estimated difficulty, mining revenue would be $0.1933 per month for $0.18 fees. Or $0.0133 in dividend, compared to $0.072 today. With some bad luck, if BTC price drops further or network growth accelerates, they could potentially hit zero a week from now. And yet the price is rising lol.

Moreover, cex.io terms state they will just pull the plug (or at least stop div payments), and thats it. With petamine at least you are supposed to get your share of the resale of hardware, pitiful as I expect that to be, especially since I strongly suspect cryptx has no interest to liquidate his mine already, he'll probably lower his fees to some point marginally below mining revenue and drag this out for as long as he can.  Wouldnt be surprised he came up with a plan to prefinance the hosting fee deficit in 'anticipation' of BTC price rise or difficulty drop.