Why do they hide?
whois:
http://www.whois.com/whois/bitcominers.comRegistrant Name:Brian Rigstone
Registrant Organization:Bitco Miners LLC
Registrant Street:hidden hidden
Registrant City:hidden
Registrant State/Province:hidden
Registrant Postal Code:hidden
Registrant Country:US
Registrant Phone:+1.000000000
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext: