The book recommendations looked good. I put it on my readlist.

The blogposted about Waldenponding, i term i never heard before, was also a nice read. I subscribed to his "whyisthisinteresting" newsletter.

So for me there was a lot to see there.

I suspect his first startup, Percolate was just a fire sale, as I know their main competitor NewsCred has just been a zombie the past few years.