I think cloudminr is a great example of "how to scam people".
What was the plan in my point of view?

• start a cloud-miner.
• make people to invest with big discounts and profit calculations.
• make them to reinvest instead of payout but make payouts to look like a serious service.
• wait until you've got enough BTC and the BTC price is high.
• pretend that your service AND - for sure - your twitter-account has been hacked and it takes time to restart a new service
• use the time to sell the scammed BTC
• still pretend that the "hackers" do that
• disappear

i think this is what happend and will happen. i don't belive the official story.