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OK, I've checked the sites:

  • Coinomia has some steep pricing starting from $100 - this is not for me:)
  • TopHash claims to give 3% a day - this is crazy high, right?
  • AutoBitcoinBuilder claims to give 6% a day

TopHash and AutoBitcoinBuilder look to be something like a ponzi, where current withdrawals are done from deposits of new users. Yet those 2 sites look a lot more professional than metizer.com and are around for much longer, so maybe somehow those profits are possible? Please send me your referrals, I will try both of them:)

TopHash (more than doubled my investment there in just 2.5 months)
https://tophash.net/?ref=Avendora24

Autobitcoinbuilder (doubled my investment in 13 days)
https://autobitcoinbuilder.com/?ref=Avendora

As for Coinomia, that $100 turns into over $200 in just 15 months if you don't reroll it back in. But it has the potential for a 38x multiplier in just 48 months if you work it right.

Coinomia is more of a long term investment than anything else is.