In my opinion there are no good bitcoin multipliers out there as they all turn scam because of the mlm component and compounding. Long term the best way is to buy and hold or trade your own coins. That way you can only blame yourself if you don't know what you're doing. Just look what happen to rev shares and those private investor facebook groups. And now the new scams are those so called mlm multipliers. I suspect soon they will all be gone as many are already starting to stay away.