Completely agree, for example I'm using C# in my work (to create strategies & indicators). But if you need to create only 1 indi on mql, you can find a programmer or trader that knows it, instead of wasting your time.

Plz help, where to start learning MQL4 to create custom indicator

There is no reason to share EA info (or any calculation method) that works. I mean : if it works, he'll be rich enough, so what's the reason to sell ideas? Just think about it =)

Best way to promote trading strategies