Every six to twelve months, check-in and look over the tags that have been created.
Check for tags with;
- similar names (report, reporting, Reports) - use merge to fix
- spelling mistakes (rep0rt) - use edit to change
Also, check for tags that are not being used - delete any not needed
Look over documents to see if additional tags need to be added.
Run a test and search for documents - can you find them?