I love the general idea of cloud mining.

Let me see now... The customer is supposed to send them some money and then can login and watch some application that purports to be mining on their behalf.  The customer can withdraw their BTC as a matter of prudence, even if many of them will not.  As long as the inflow of new BTC is greater than the redemption, whoever the man behind the curtain is, he doesn't actually need to do any real mining.  Or perhaps he can fudge the numbers and "exaggerate" a bit.

Who is Nimbus?  What is their connection to BFL?  How can they assure anybody of the legitimacy of their mining operation?  How can we trust a business that depends upon timely delivery of BFL vaporware?  IMHO, this has Ponzi written all over it.