Re: A Song of Ice and Fire books
I think the fanfiction mention was meant to indicate novels within the world of ASOIAF written by someone other than Martin. Shared world novels, such as the various dungeons and dragons novels or tie-ins like the Star Wars EU, are frequently referred to as "fanfiction."
Goku Lands on Namek CEO
...no king but the King in the North whose name is BRADY...