Board Thread:General Discussion/@comment-20302766-20130225092019/@comment-26686429-20130225131223

The terms of use prohibit the posting of: "any content that is obscene, pornographic, abusive, offensive, profane, or otherwise violates any law or right of any third party, or content that contains homophobia, ethnic slurs, religious intolerance, or encourages criminal conduct; " Whlist this is open to interpretation, most fanfic/art will probably be ok - but you should let your users know that offensive content won't be allowed.

I'd also say that links to content that violate those Terms of Use are probably not allowed, but you could link to, say an image on imgur.com - even though some images on that site would break the ToU.