Tagging vs structured metadata
Who needs metadata anyway? Can’t we all just use tags? Aren’t they better at describing content with words that our users will want to use to find that content? Metadata is just for browsing to find content and who really browses?
Just playing devil’s advocate! There is some interesting investigation into these types of issues in the presentation I’ve linked to which discusses metadata from a very knowledgeable standpoint, and I find that very refreshing.