User blog comment:The Nobodies Rules/What makes a certain AU a popular one?/@comment-25607939-20141129033100

The criteria for the wiki when it comes to AUs, EUs and pairings are that there has to be a minimum of 3 "Known Examples". This includes fanart, mockup art, fanfiction, videos, even articles from certain websites. The page's main picture at the top counts as an example. How the AUs themselves become a "thing", I have no idea. They just do.