I agree with you. I am living in a country where FB is banned but some people like me can find some methods to access it. I find FB really boring but enjoy Twitter and Feedly ver much.
> Getting customers is not too hard by poaching them from Stack Overflow, Reddit, CodeMentor.
I have contributed to the SE for more than 6 years, beginning as a greenhorn and ending so far with more than 400 posts(most are answers). I find the value of SE is threefold: 1, it provides me a communication platform; 2, it provides me a place to take notes; 3, it keeps track of my improvements partly by a reputation system which I can monetize elsewhere. I only spend time writing answers there in my idle time.