Our library uses subject headings extensively in the cataloging of fiction.
The fiction collection is no longer just a ‘browsing collection’. Rather it is… but the browsers are often home at their computers. Therefore the use of subject headings and summaries is essential to give the remote users a clearer picture of the item. Say perhaps a mystery lover wants to read books that are set in France and feature nuns. They can use a subject keyword search and type in Mystery France Nuns and they will retrieve a list of items that meet their criteria.
What is your library doing? Do you go the extra mile for the remote user when it comes to fiction?