There have been several attempts at creating decentralized social media platforms, such as Mastodon, Diaspora, and Steemit. However, these platforms still rely on centralized servers and can still be shut down by governments or corporations.
Mastadon and Diaspora actually aim to create
federated social media. Although IIRC, Mastadon dev/community replace term "federated" with "decentralized" at some point. As for steemit, people no longer consider it decentralized after hostile takeover by TRON foundation and some exchange.
Does anyone else remember this project or know what happened to it? I'd love to hear more about it and whether it's still being developed.
By any chance, do you refer to
https://memo.cash/ which use BCH blockchain?