I have lost BTC in many of the ponzis, sometimes just joining too late, sometimes just can't stop reinvesting. last one was Adbrook, lst a lot in there. But anyway, do not invest if you are not ready to loose that amount, never try to invest last $ or BTC.
You should never invest in these kind of ponzi sites instead just keep your coins with you and sell when prices go up. These sites 100% scam people and now a days some of these sites will not even survive for few days but some sites who aim for bigger profits then they may survive few days or months and finally all of them will close so do not encourage those site by investing on them.
+1
avoid ponzi's...
but to be honnest...I tried ponzi's...and lost a little.
I have definitively stoped investing in ponzi...
but sometimes systems do not look like ponzi's...and then I'm scammed.
My advice:
AVOID PONZI'S.