Bitcoin Cloud Mining Scam

I have been working on many cloud mining websites since few months many of them guaranty that they will be paying you without any work or any investment.
But I have experience a bit different, most of the website , specially the one paying high like "coin-nova.com" , are scam. They are just earning from your views and ads on their website. Few of them pay but very low $2 or $3 in month.
If you want to earn better do mining or invest on cloud mining website most of them pay.