I use labels and it provides a good way to search or keep a track or compliance check (given labels are applied in a controlled manner to documents/pages
).
Once I get the result, I was interested in to show the count of total results found as well, than me manually counting.
One practical example is, we use labels to to tag something that needs to be reviewed and actioned, we do get the desired list using filter by label, though, we have to count our way to create summaries such as number of open items needs to be worked upon for anyone visiting the page that tracks filter by macro.