Do you think it makes sense to invest in the cloud mining of bitcoin now?
No, it doesn't (has been like that for a long time) plus investing in cloud mining, is equal to giving money to scammers (in most cases).
There are a lot of cloud services with reputation, so I use them and they are paying. Moreover, there are some resources that monitoring scammers and other bad guys. I am checking them everyday.
But I'm asking about amount of investment to cloud mining to be in plus every time. Is there any formula or function, which allow me to find out which amount of investment can bring me most advantage?