For risk takers only.
I know a site who can double your bitcoin within 24hrs.If you still have doubts you can try to invest small amount and you will receive your doubled btc within 24hrs.
Note:if you invest on fridays expect to receive your payout on monday.READ FAQs for more info
http://dmb-invest.netii.net/?r=3PDFXppHU9WJCiSqVkrRG51wUyCzahqXre
