I recently started using Bluesky and noticed something interesting. Under the "Getting Started" section, it says things like "Teach our algorithm what you like." Bluesky is supposed to be decentralized, so why does it even have an algorithm? Isn’t the whole point of decentralization to avoid centralized control, including things like content algorithms? Is this algorithm centralized, or is it designed to run locally within the decentralized structure (like on individual servers)?