The term I use for my feedreading. I follow people and in my feeds they ar categorised along social distance (from close friends, ever wider circles to total strangers).
It is also a notion of how I approach discovery: people link to or mention other people’s posts, I read the post and look up who wrote it etc. This triangulation works across various forms of social platforms. Also e.g. Friend1 visited a place, that place was also visited by StrangerA who has a blog which turns out to be interesting. StrangerA is added to my feeds.