lookin' at the btc price trend 
i think we are fucked....
if price goes back to ~220$, or under, we may see negative dif again
i think we are fucked....if price goes back to ~220$, or under, we may see negative dif again
that is right price goes over 300 and it is over we will jump in diff. a lot.
Well, at least we all loaded up on cheap mining hardware, didn't we?
Should be able to survive a few 10% jumps.