Authors like BEStoryteller and InfiniteCurves operate exclusive tiers where subscribers vote on monthly themes. These tiers often grant access to a "Vault" of stories that will never see the light of public search engines. The exclusivity here is temporal and absolute.
Authors within this genre utilize various narrative mechanisms to initiate the expansion. Common tropes identified in the genre include:
While TOB is a historic free repository, the exclusive aspect comes from their "Author Only" or "Donor" sections. These areas contain polished, high-resolution PDFs of series like The Expansion of Emily, which have been retconned and edited into coherent novels.