One of the hard things for an writer to accomplish is knowing where their book will land on a bookstore’s shelves. Write a mystery, romance or western, and you have no challenge on this score. Write a story that simply tells a tale, though, and you have two choices: mainstream, or slipstream.
The latter term was coined by science fiction writer Bruce Sterling in 1989, and it’s even got a Wikipedia entry. Eventually that entry will lead you to Sterling’s article. He quips that he’s made up the word based on mainstream. Slipstream is also a kind of propulsion drive used in Star Trek, too, but in Sterling’s view it’s a story that crosses genres (say, sci-fi and mainstream) and describes a world that’s different.
For a master list of the wide and wooly range of slipstream, have a look at the titles Sterling compiled along with Nova Express sci-fi editor Lawrence Person. (Both living in Austin, by the way, home of our Writer’s Workshop.)
Sterling’s article is worth reading if you’re writing something that isn’t quite one genre or another. For now, I’ve decided that Viral Times is slipstream fiction. It’s not a section in Barnes & Noble, but at least it’s a more accurate description of how rich the story will be once its finished.