Originally Posted by dwanthny
Essentially the genre column is standard in calibre, it is just called the tags column. Tags
are the generic industry metadata standard for applying labels to items in the internet and so has been the default value for what you call the genre column.
No, I actually wasn't referring to the tags column, but a hierarchical genre structure such as described in the help files. For instance, a book with genre: Fiction.Historical or Academic.Arts.Painting or just "Sports". The hierarchical categorization can have multiple uses, but I'm going to go out on a limb and say that genre classification is the most prevalent.