All investments are not ponzis but all ponzis are investments..
Try to get a clear thought in it before you do anything with your btcs..
Best of luck
Look at ROI rate or price. If they are super low prices (especially things like cloud mining) then there is a good chance of ponzi. If you have a investment that promises tons of ROI really quick.. chances are ponzi.
I think common sense comes into the decision alot.
If you're going to invest, you need to evaluate the business itself. 99.99% of the people here throw their money blindly at anything and everything, then claim "scam" after, when it was an obvious scam to begin with. If someone has to ask what a good investment is, they shouldn't be investing.
This thread has gone on far to long my quote is from April . But you should do lot's of research and evaluation.
With cloud mining look for concrete information they even have miners, most cand even do this. We have seen some that are photo shopped pics to make data centers. There is a famous one where every blue rack looks exactly the same, they were copied and pasted.
I agree sadly some throw money before looking into it at all. This should never happen but it does.
Cloud mining, by its very nature, is going to cause a loss of funds. Whether the company is legitimate or not doesn't even matter. The math speaks for itself. You will not ROI with cloud mining. It doesn't matter what company. It doesn't matter how much you throw at it. You've lost the second you pay.