@flancian is building the knowledge base Agora, discussed in Show HN: The Agora – an experimental social network | Hacker News (first HN comment gives a summary of Agora) and has very interesting concepts (though I didn’t deeply dig into them yet, and it can be a bit hard / overwhelming to navigate). Btw, Flancian is exploring a connection to [[underlay]] :
@VictorVenema is outlining a use case related to knowledge collection in Bulding information sources with lasting value.