It costs a lot of money to power the CPUs that power the bitcoin mining and processing network.
If the price falls any further there is a genuine fear that mines could just turn off the power.
According to from Bloomberg, unless you're an outfit running the fastest rigs bought at wholesale prices then chances are you're losing money.
Miners - now having to work even harder for each Bitcoin - dismissed the rapidly rising rneed for cumputer power - up 18-fold in two years - because the massive 21-fold price increase over the same period made the cost worth the investment.
With the price now at $6,785 this could now be undone.