Blacksky launches Acorn for decentralized communities as X shuts down Communities

Blacksky launched Acorn on May 4, 2026, pitching it as a way for organizations and creators to build and run their own online communities on decentralized infrastructure just as X moves to shut down Communities. The timing turns Acorn into more than a product debut: it is a test of whether community builders can own their spaces instead of depending on platform features that can disappear overnight.

X said on April 23 that Communities would be shut down on May 6 after Nikita Bier, X’s product head, said the feature was used by less than 0.4% of users but generated 80% of spam reports, financial scams and malware reports on the platform. X also extended the migration deadline for community administrators to May 30 so they can move members into XChat group chats, which the company is positioning as a standalone chat app with public joinable links, up to 500 members at first and a goal of 1,000 soon.

Acorn sits on the AT Protocol, the decentralized social networking system behind Bluesky. Bluesky describes the protocol as an open-source framework built so users can move their accounts and social graph between services without starting over, while also supporting account portability, algorithmic choice and composable moderation. Blacksky says Acorn is built to help communities grow and manage their own spaces on that infrastructure, with tools for labels, mutelists, bans, mobile-friendly moderator workflows and a rebuilt Ozone moderation system.

Blacksky’s pitch is aimed at a long-standing weakness in decentralized social media: the hard work of making communities usable at scale. Discovery remains difficult when people are not funneled through one dominant feed. Moderation is harder when rules are collective and enforcement has to work across changing servers. Migration friction can still slow adoption even when protocols promise portability. And scale is where many alternatives fail, especially when creators and organizations need a stable place to welcome newcomers, set policies and track engagement without rebuilding their audience from scratch.

The company says it began by focusing on moderation and community care, and has described its work as centered on safer online spaces for Black users and other communities. With Acorn, Blacksky is adding starter packs for newcomers, custom feeds, moderation policies, reporting tools, badges and awards, plus analytics to track growth and engagement. The broader question is whether those pieces can turn decentralized ideals into durable institutions, or whether the next round of online communities will still end up hostage to the products of a few large platforms.