The buzzword in promotion is platform. Agents and editors want their authors to have a brand, a tagline, an expertise that sets them apart from everybody else. For nonfiction writers, this concept is fairly straightforward. If I’m writing a book about training cats to line dance, then I must establish myself as an expert cat trainer—by blogging, giving talks to cat therapy groups, and writing articles for publications focused on all things feline. But how does a fiction author establish a platform/brand?