User blog comment:Enderlucario/IS there a strict definition of what is "official, commercially-published media?"/@comment-1197011-20180808222254

It means we don't allow things such as fan-fiction, user creations, creepypasta, web comics, Internet memes, YouTube series and web-original content in general.

The reason for this is basically the following: if we allowed some, we would have to allow any. Wouldn't be fair otherwise. The admins have voted and decided that it would be best to exclude all of that, than to allow anything to go by.