Currently, Tyler Cowen is my favourite public intellectual. I love his podcast and his blog (which he’s also been writing daily) is always insightful.
Turns out, his influence was intentional as written in his personal moonshot:
My goal is to be the economist who has most successfully used the internet as a platform to foment broad enlightenment. As I see it, the internet is changing everything, and most intellectuals (and also businesspeople) still are underestimating the import of this reality.