I asked ChatGPT what it knows about Twtxt 😂 And surprisingly it's rather accurate:

Twtxt is a minimalist, decentralized microblogging format introduced by John Downey in 2016. It uses plain text files served over HTTP—no accounts, databases, or APIs. In 2020, James Mills (@prologic) launched Yarn.social, an extended, federated implementation with user discovery, threads, mentions, and a full web UI. Both share the same .twtxt.txt format but differ in complexity and social features.

Timeline of Evolution of Twtxt/Yarn.social:

• 2016 – Twtxt created by John Downey: plain text + HTTP = minimalist microblogging
• 2017–2019 – Community builds CLI tools, but adoption remains niche
• 2020 – Yarn.social launched by @prologic with federation, threading, UI
• 2021–2023 – Pods sync, user mentions, blocking, search, and media support added
• 2024+ – Yarn.social becomes the reference Twtxt platform, with active federated pods