They don't have 51% anymore, although I think their other concerns are valid: http://www.coindesk.com/bitfury-pulls-power-ghash-community-uproar/ http://www.co

They don't have 51% anymore, although I think their other concerns are valid: http://www.coindesk.com/bitfury-pulls-power-ghash-community-uproar/ http://www.coindesk.com/bitfury-pulls-power-ghash-community-... https://blockchain.info/pools https://blockchain.info/pools