Lucky me - On December 29th I bought 1.9 Th/s with Cryptomine and they were paying me on a daily basis. My personal first red flag was that they had to manually approve it anytime I wanted to withdraw my bitcoin. I thought to myself if I was going to run a ponzi scheme I wouldn't want my customers to be able to withdraw their money anytime they wanted. Anyway they kept paying me so I moved forward. On December 31st I bought 5.9539 btc through Coinbase and good ol' Coinbase didn't make it available until January 7th. So I think hey this cloud mining company hasn't missed a payment I'm going to give them the benefit of the doubt and now buy 4.5 Th/s. They gladly took my bitcoin on January 7th, gave me a payout for 1.9 Th/s and updated my Cryptomine account showing the extra 4.5 Th/s. I like everyone else have not received a payment or heard from them since.