Now I see two main reasons, because of which the rate of bitcoin falls, and with it all the crypto-currency. This is negative news about the crypto currency, including fake ones, and throwing on the market for sale large batches of bitcoins by such persons as Mt. Gox from Tokyo. So, today there were news that Mt. Gox today sold 8,200 bitcoins on the market and therefore bitcoin fell in price to about eight and a half thousand dollars. And all he intends to sell two hundred thousand of his bitcoins. If he also sells them in the same lots after the restoration of bitcoin in the former value, he will restrain the bitcoin course for years.