I suggest that to stay away in MLM early or not because you'll not get your 100% ROI back even you join in early stage. Tried it before and it did not end well once someone invested a large amount of Bitcoin they just run.
They are just the same as pyramid ponzi scheme like MMM global.. that i think better to go in trading instead if you really want to make profit the risk is low not the same as investment site like MLM and MMM.