Instagram is experimenting with algorithm control tools for Threads, allowing users to 'tag' the algorithm to customize their feed. Reverse engineer Alessandro Paluzzi discovered the code, and Instagram confirmed the internal prototype. Users can tag an account to indicate desired content. This mirrors Elon Musk's plan for X. Instagram is revamping its app to focus on Reels and recommendations. These changes respond to concerns about social media's influence on youth and the rise of open social networks like Bluesky.