Thats why you should never buy on margin. Wonder how many people got wiped out.
if they don't sell they have not lost anything, the same for those that they didn't sell in 2013 and that held their amount until this pump, they didn't lost anything too, it's a matter how much you can hold seriously, there is nothing more to do, but cashign out at the right time and buy back more coins is something few can do
its not good to sell right now because the value is reduce but in the future, i think the value will be increase again like before. i think what happen in the last year will be happen again and for people that want to buy bitcoin, i think they can waiting for a while before they want to buy directly because the price is down now.