and TV Shows. Stories on the site can be published as either "Fanfiction" with only one assigned sub-category, or as a "Crossover" with only two sub-categories. Excluding crossovers, the top fandoms on the site are Harry Potter, Naruto, and Twilight. Writers may upload their stories to the site and must assign them a sub-category, language, and content rating. FanFiction.Net uses the content rating system from FictionRatings.com. This system contains the ratings of K, K+, T, M and MA. The MA rating and explicit violent and/or sexual themes are forbidden. The ratings are no longer done on the MPAA system, due to cease-and-desist demands from the Motion Picture Association of America in 2005. A list of explanations for the rating system currently employed is available from the drop-down rating menu in each of the individual archives on the site. The MA (18+) rating is not permitted on this site. A short K-rated summary is also required for a story to be published. While not required, the website recommends authors upload a cover image to their story. Reader feedback Readers can interact with the FanFiction.Net content in various ways. If the reader likes a story and/or its author, they can favorite both the story and its author.<ref name="Following and Favoriting explanation" Favorites are similar to likes, hearts or Archive of Our Own's kudos. Favorite stories and authors are displayed on a user's public profile page at the very bottom. A reader can also follow a story and/or its author. When a reader follows a story, they receive email notifications whenever that story is updated. When a reader follows an author, they receive email updates whenever the author updates any of their stories or publishes a new one. Readers can also leave reviews after reading stories, most of which are positive. While reviews can be left by those without accounts, it is an option for all writers on the site to moderate "anonymous reviews", made by those who are not signed into an account. FanFiction.Net does not operate a screening or editorial board. Most popular sections As of October 8, 2022, the top 20 fandoms (i.e., the fandoms with the most stories submitted) on FanFiction.Net are (the figures are rounded to nearest thousand): The top fandom for each category on the site are: Notable long fan fiction works FanFiction.Net also hosts one of the longest works of fiction ever written. The Subspace Emissary's