In this regard, I found the Diaspora federation protocol docs quite interesting: https://github.com/diaspora/diaspora/wiki/Diaspora%27s-federation-protocol htt

In this regard, I found the Diaspora federation protocol docs quite interesting: https://github.com/diaspora/diaspora/wiki/Diaspora%27s-federation-protocol https://github.com/diaspora/diaspora/wiki/Diaspora%27s-feder... While Diaspora itself might not fly, the protocol could quite easily be implemented in a bunch of different systems, creating a real federated social network.