Are you talking about ponzi scams which promise to give 1% daily forever or 0.1% daily forever etc? Sorry, but you will end up losing money in that scheme. Nothing last forever. Ask them do they pay even your children and grandchildren? Search google for ponzi scams and also search for the people arrested.
Lol, this probably exactly what he is talking about. Let me guess... Bitconnect?
No, Bitconnect may be good for some but I only trust the most common alts, that has shown positive develop teams and market growth. Bitconnect may be ok, but Ill stick to what I know has already paid or earned good interest.