That's very interesting. How do I see what someone 4 hops away from me does? Is this somehow visually presented as a graph that I can click through?

And if my network suddenly grows by 20k npubs maybe someone 4 hops away just followed people from Paraguay and now I suddenly have all the nice people from Paraguay in my extended network. 

 Eventually I want those kinds of visualization tools to exist. I tried building them a while back using visjs and the graph bogged down too much with more than about 500 pubkeys. For now, I’m focused on my exposition and understanding of the algorithm itself. And on rebuilding the PoC on the back end instead of all front end.