Considering the dial one turns when building social software, between emphasis on people and emphasis on the spaces they occupy.
Compare being "in" a channel or rooms vs. "following" an individual. Systems focus on one or the other (yet always support both: DMs and privmsg; hashtags and groups)
Anyway this all needs to be rebuilt atop matrix.org or something because content addressing. Seriously it's 2017 and we're back at "overloaded server, can't load". Not even like zooko's triangle.
@graydon content addressing ~= magnet links for toots?
@Gankro chained history graph => same data no matter where you pull it from (bonus: these days p2p in the browser works too)
@Gankro Depends on the granularity of chaining. But yes it has potential to cause some "carrying other people's traffic" (that's at least part of the point!)
You can also make mutant forms that cut off the fabric at a given topology or trust threshold, like shallow git clones or required signature-trust proximity or whatever.