Watch list
Kept with your free account, on every device you sign in on. Each one shows the latest from its record, and you can have an email when one changes.
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Nothing watched yet
Open a place or a thing and choose Watch. It will be listed here, with the latest from its record.
Sign in to keep a watch list (free)
A watch list is kept with a free account, so it follows you to every device and can email you when a record you watch changes: at most once a day, only when something changed. Browsing never needs an account.