but, i already have 0.015 btc in that itcoin and always give me more btc everyday. i think like greencoincash or like ourbeks i used them for more than 2 months i think but, it already not scam i think because that 3 sites always pay me.
HYIP and ponzis work till they dont, they are more probably to run away when more people invest. Most site would just run away at one point, it can be very long or very short. The fact that you created this account to post this is suspicious, are you associated with them?