The concept of personalized feeds on Bluesky, powered by open-source models like GPT-OSS, represents a significant step forward in user-centric content curation. As demonstrated by user j4ck.xyz, the ability to create custom feeds based on individual user data, such as likes and follows, allows for a more tailored and relevant user experience. This approach, which leverages the AT Protocol's flexibility, moves beyond traditional algorithmic feeds and empowers users to define their own content discovery mechanisms. The use of open-source models in this context is particularly noteworthy, as it promotes transparency and allows for community-driven development of new and innovative feed designs.