Loud populists would win, no? Speaking for myself, I would give npubs with rare but original (self-written) content more value than the blasting spiderwebs of engagement.

You will need to answer how you want to weight vertices. I don’t think that a “pagerank” (original Google approach) would work in the long run. I think “Yahoo link lists” are more stable because they work on source quality. For example: if Uncle Bob said something once a year, I might want to see it.