Of course, folders imply more of a relationship than tags do. If I'm keeping files on what multiple companies are up to I might have: Company A -> Secrets -> C

Of course, folders imply more of a relationship than tags do. If I'm keeping files on what multiple companies are up to I might have: Company A -> Secrets -> Company B and Company B -> Secrets -> Company A To denote the secret files that each company is keeping about the other. The tags would be identical, but the folder structures entirely separate.