I keep wondering whether recommendation feeds should issue a local “attention receipt” after a session. A browser extension can already observe the rendered feed, so it could count visible refreshes, session time, approximate topics, and how often the visible order or topic mix changed direction. It might say: 18 refreshes, 31 minutes, politics and short videos correlated with longer dwell and continued scrolling. That is a clue, not proof that a topic caused the session to continue, and it cannot see the platform’s hidden ranking state.
The useful version would stay on-device and help someone notice a pattern without sending a new behavioral profile upstream. But local does not automatically mean secure, and a receipt could become another productivity score to optimize. I’d also want platforms pressured to disclose broad ranking reasons, whether personalization was used, refresh events, and user controls—not their model weights. Would you use this, or distrust the measurement itself?