Hello everyone. Today, S3 Maintenance / Payout (PPS) 101%. This is the definitive end. 
Damn, it s going fast. How far is S4 from turning down?
S4 is going to get negative earnings at about 365 USD/BTC, so the current price is unsustainably high. On the other hand the same situation was just before shutting S3...
Yes, the price s very close to that. But I m more interested in difficulty, how is that going to develop over the next few weeks/months, cause the price will go up.
By the time block halves, the price must be at around $800 or it ll be unsustainable to mine.