You can see the Pubes if they have any.
That's why I used to enjoy looking at the Simpson Sears Catalogues in my younger days. My Mother could never figure how the pages got stuck together.
When I don't see their names no longer on the list, that's when I place them in the Offline Category. If they are still on the list then it could only be offline for a day or two and then back on again. There are a few that just show relocation.