i just heard the scams done to some peps
i am thinking to invest a bit in ckminer.com
is it ponzi system site?
should i invest in it?

and please drop some legit cloud mining sites below
You must know, all cloud mining majority only ponzy site
ponzy scheme, you don't know in cloud minig site real mining or not
because you can't see is hadware in use cloud mining, you only see picture or video, not real