How Google perfected the web
clear, well-written overview of the positive feedback/signalling game of SEO
What if PageRank Was a Mistake? — Sympolymathesy, by Chris Krycho
"All curation grows until it requires search. All search grows until it requires curation." see also Halt and Catch Fire syllabus week 13 https://bits.ashleyblewer.com/halt-and-catch-fire-syllabus/classes/13.html