This is a Bluesky - Fediverse bridge. “What is Bridgy Fed? Bridgy Fed is an effort to create a multi-protocol communication server that can translate people, content, and interactions back and forth between networks that speak different protocols. For now, it only speaks IndieWeb and ActivityPub, but Ryan has put in a lot of effort into making it speak the AT Protocol (Bluesky) and Nostr as well. Those are due to come in the following weeks, and were a central focus in Ryan’s announcement. How Did the Community Respond? To be fair, a sizeable amount of people had good things to say about the new development, and many IndieWeb and Bluesky users were supportive and even excited. Unfortunately, an extremely vocal part of Mastodon expressed a range of negative reactions, going from critiques to insults to vitriol, demanding everything from the developer deleting his project to Ryan leaving the network permanently.” https://wedistribute.org/2024/02/tear-down-walls-not-bridges/
Join the discussion on this topic on the Summer of Protocols Forum: https://forum.summerofprotocols.com/t/activitypub-at-proto-bridge-war-in-dark-forest/114