Protagonize is an online community originally dedicated to the (nearly) lost art of the addventure (yes, that's spelled right), a very specific type of collaborative fiction. Recently, the site has been expanded to support the creation of linear stories, as well. We hope this will allow the site to attract a broader community of authors looking to create collaborative, interactive fiction.
Linear stories are familiar to everyone, but you may be asking yourself: how exactly does an addventure work? Early forms of this on the web date back over a decade, when Snoot.com popularized a site called "Choose Your Own Schizophrenia", a collaborative fiction site popular in the mid-to-late '90s. Of course, this all dates back to the old Choose Your Own Adventure™ series that started back in 1979 and ran until 1998, published by Bantam Books. To quote the wondrous Wikipedia (and to save us writing something that's already been explained better by someone else):