If you want to see the Facebook thread that most directly (there were schemes and ideas beforehand) resulted in #SocialCoop, check this #PrimarySource: https://www.facebook.com/groups/p2p.open/permalink/1448639075180267/
It's interesting to see what concerns at the time (2017) are still discussed, and what seems to have faded from consciousness since then (in particular, concerns about the same handle on multiple instances).
Also, #DmytriKeleiner has popped onto the zombie thread for some light trolling... :P
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