I understand GHash is presently mining at 29% -- considerably down from the 51% they were mining at earlier.  Did this large decline in mining rate come about as a result of them voluntarily cutting back on their mining operations (or redirecting them elsewhere)?  Or, as I understand, were they a direct result of some actors within the community taking directed actions against GHash?  If the latter, then it seems that there is already an emergent mechanism in place for protecting the market against rogue operators.  I would be tempted to hold long enough to ascertain whether or not this mechanism can be relied upon in the future to take the necessary action should this happen again.  Presumably the threshold for going into action will be lower the next time (40% is already excessive).