Apple opened its Safari segment with the problem. Open tabs are watchlists.
People already pay to stop checking. In a single-day snapshot this spring, 1.87M monitors were active on Visualping. Apple just put the same behavior on the keynote stage.
Notify Me lets a user name the change they are waiting for and leave Safari to watch the page.
Confirmed: scheduled checks, daily, monthly, or specific weekdays (default 10:00 AM). Still open: faster intervals, where the checks run, page limits, change history.
Safari comes back when the page changes. The return path is now platform territory.
Search answers once. The web keeps changing. Whoever owns the alert owns the return visit.
The user asks once. The agent keeps checking until the page changes.
The user asks for something that is not available yet.
The agent checks the page-level source.
The answer appears when the page changes.
ChatGPT Pulse (Sept 2025). Google information agents (May 2026). Safari Notify Me (June 2026). Same pattern, three platforms, nine months.
Two platforms moved inside a month. The behavior is a decade old on the open web.
Search → Watch → Notify diagram. Lineage timeline. Both available as PNG or SVG on request.