My mistake. Twitter and Mastodon are written with Ruby on Rails. Mastodon looks like it was released about 10 years after Twitter. https://en.wikipedia.org/wik

My mistake. Twitter and Mastodon are written with Ruby on Rails. Mastodon looks like it was released about 10 years after Twitter. https://en.wikipedia.org/wiki/Comparison_of_microblogging_and_similar_services#Features https://en.wikipedia.org/wiki/Comparison_of_microblogging_an... Mastodon logo; https://commons.wikimedia.org/wiki/File:Mastodon_mascot_vector_version.svg https://commons.wikimedia.org/wiki/File:Mastodon_mascot_vect... W3C SOLID > #design: https://en.wikipedia.org/wiki/Solid_(web_decentralization_project)#Design https://en.wikipedia.org/wiki/Solid_(web_decentralization_pr... Solid protocol > Authentication, Considerations > Privacy, Societal Impact; https://solidproject.org/TR/protocol https://solidproject.org/TR/protocol - presumed benevolence of early-adopter swarm; and costs - [ ] can anyone delete already-federatedly-propagated-and-decrypted messages with any federated messaging system? Which are desirable? The e.g. Cyph pricing page - which has a free option - may indicate their cost structure for e2e voice/video and editable, revision-tracked and centrally-dated signed 'tweets', https://schema.org/Article https://schema.org/Article > NewsArticle, ScholarlyArticle, SocialMediaPosting > [BlogPost, DiscussionForumPosting], [AdvertiserContentArticle]