Are you invest in Osmanlibux or Memberbux for second cashout?!

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I am a member there and have direct referrals and I do not want to lose this sites, if they do not turn into scam. I am wondering If anyone invest there, because you have to invest and you can cashout 120% of that. In Memberbux min. cashout is $4, but I do not reach it yet. Anyone knows they are trusted or not? Some expirience? Thank you for answers in advance :)