Any user can tag any business listing, whether it is claimed or unclaimed.

Claimed businesses: For claimed businesses tags (like business details) get locked, this means other users can’t vandalise the work you’ve done to build your listing.  Users can however still add tags (but not delete them or change what’s there already), in this way we allow your business tagging to organically grow as people add relevant and useful tags.  You can still manage your own tags, because Brownbook.net alerts you any time anyone tags your business, so if you don’t agree with any new tags they’ve added you can remove them.