For me there's a little bit hard in mining because we dont know whether the sites are paying, but I saw also more people earning in many sites. I hope there's a sure mining already and no scam site.
Again and again.. it told you by many times. those mining sites are cloudmining and they do not belong to mining at any point.bitcoin mining is not related to any website. you can just buy pool or hashes. but they sites won't pay you anything.. you need to use your own computer and hardware to mine bitcoin yourself.
first please understand what mining is.
Ya it is totally true that their are so many spammers who just wanted to troll their post to reach the target for their signature campaign. and for that without reading the full detail on thread, they just post it the same question.
If OP is reading then for mining , now only Altcoin are giving profit because their are running in cpu and gpu mining and as soon as they hit exchanges you can sell them and earn profit, but that is also upto which coin you are mining.