[soulchild37]

I don't know which aspect for the "best" you mean, if you meant best on monetary gain by reading their articles, definitely https://kalzumeus.com (HN user patio11)

[zer0sand0nes]

he encourages people to write to him -- has anyone?

I wanna write to him about a Startup idea I have, to see if i can ask him some questions and see what he says about the potential of it. That be ok right?

[1123581321]

I wrote him an email once and his reply was gracious and very helpful.

[pauljarvis]

"best" is however you define the term :)