Whenever I am contacted by someone who needs to hire a ghostwriter for a short story, I'm immediately interested. I produce a lot of factual content - online news articles, SEO landing pages, product descriptions etc - but fiction is where you can get really creative with words.
A short story is a search-friendly way to do that. Adjectives and metaphors can create a picture in the reader's mind, while plain text remains the easiest format for Google to crawl and index, adding to your presence in the search results.
In many cases, customers who want to hire a short story writer plan to publish the story in print, whether as a gift for a friend or family member, as marketing materials, as a teaching aid, or for some other purpose out there in the real, physical world.