Scam or legit : how to identity a scam or legit paying site online

Do you know there are many site offering paid and free services involving huge cashout if you participate in their task,it attract people and they later end up being scam and all efforts wasted

How do I know A genuine and legit site?
You don't expect a site to pay you 25$ just for registration when is not billgate foundation and every individual referal each 25$ just like that..
No job is easy even online job need skill,money,time and strategy to make money.
Many believed secure sites with https are legit,I doubt that because have experienced that in the past,so always before not to work in vain.

How can i know and identify a legit paying site?

I believe everyone is familiar with Google, simply type the site title followed by review.... E.g earnmoney review, Kitcash review...

By typing this on Google,you will see blogs,sites with different review recommending and rectifying scam or legit reviews about the site before you engage in it,, hope it helps..kindly share!!!