Board Thread:General Discussion/@comment-5070188-20151226234449/@comment-26402117-20151227171632

Exactly. When you submitted the fanfiction content, you gave Wikia the right to host and distribute your content under the Terms of Use - and any so-and-so the right to copy and paste the fanfiction if they attribute you under the full legal code of the CC-BY-SA. A license is a legal code that must be taken seriously and read. You may have copyright on the content (so can DMCA people stealing it), but on the date and time of submission you waived your right to prevent people remixing and distributing the content which is now gone. You can't stop that - even if you close the wiki, someone can republish the fanfiction and attribute you claiming that the content was retrieved according to the terms of the license.

Fanfiction in general exists upon the fairuse clause that allows educational and non-monetized limited use of copyrighted material. But it is only a actionable issue if the original copyright owner (the author or designated copyright agent at the pubishing house) physically takes legal action to ensure the removal of the content through a DMCA takedown request or the traditional C&D. It is still technically a copyright violation tho - fairuse is a defense claim in the courtroom. In general, I have never even thought of publishing personal material on Wikia because it would be a part of my real identity and no longer my property.