Be Wary of Bluesky
Hacker News
February 20, 2026
AI-Generated Deep Dive Summary
Bluesky positions itself as a decentralized platform with ATProto, promising users control over their data. However, nearly all users rely on Bluesky's servers for storage, undermining its decentralization claims. Each new app built on ATProto reinforces this centralization by funneling more data to Bluesky's infrastructure, making it harder for users to leave.
The article highlights how Bluesky controls key components like the Relay, AppView, and DID Directory, giving it significant power over what users see and do on its platform. While the protocol allows others to run their own services, most choose Bluesky due to convenience, creating a dependency that could become problematic if Bluesky is acquired or changes policies.
The piece warns of potential risks like data lock-in, where users can't easily migrate their data if Bluesky restricts exports or shuts down third-party access. This centralization flywheel not only concentrates power but also increases vulnerability, as seen in past platform transitions.
For tech enthusiasts and those concerned with data sovereignty, this matters because it reveals how "open" protocols can still lead to unintended centralization. The article underscores the importance of understanding who truly controls your data and whether platforms live up to their decentralization promises, urging caution in choosing where to store digital assets.
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Originally published on Hacker News on 2/20/2026