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I think moderation on large social media would be easier if reading wasopen but writing was limited to being connected through some number of hops on the social graph by default. So much BS in "the comments section" is from randos that just had the algo show them a post and have no social context.
Maybe they can comment but only their friends should see it by default?
@mauve
Connectedness (positive via shared followers and negative via connections to blocked accounts) would be a super useful metric for all kinds of anti-abuse.
Sharing of social graphs does present some interesting privacy challenges, though. As far as I can tell, we'd need some good libraries for Private Set Intersecting calculations.