In your opinion what are the reasons that let someone start dumping his bitcoins and walk away ?
I personally (and this is just my opinion) that it's more panic then simply his need of money or something else , as we saw on the BitcoinXT last time , people started to panic and simply sold their bitcoins and that caused a drop in the price .
The person who needed money to pay bills, medical emergencies, or just quick money, is probably the one who will dump his bitcoin. I think the need to understand very well what bitcoin is will help not to act hastily.
Their are many people dump their bitcoins because the price is so very low. And they wonder why bitcoin is gone in seconds why the price is not stable. So they think they dump their bitcoins. They lose their hope.