I believe many just become extremely good and they do so by studying the market in fine detail. Cornering some niche market segment with complex instruments, for example. It takes a lot of mental agility and it changes how one looks at trading. After that, coming to ET to read "Imma gonna make 1 millions in the next 2 month!!" doesn't really tickle the brain much. There has to be give and take - advice given and advice received. When it ends up being one-sided, the interest fades.