A fanlisting is a place for all fans of a particular show, movie, actor/actress, singer, etc. to come together and build the biggest listing of people from all around the world who are fans of that subject.
(from TheFanlistings.org)

This particular fanlisting is for fans of Nina Einstein from the anime series Code Geass ~ Lelouch of the Rebellion. If you're one of them, feel free to join!