Very simply put a fanlisting is a list of fans of a particular subject from all around the world. The subject of a fanlisting can be almost anything you can imagine. There are fanlistings for Movies, Books, TV Shows, Bands, Songs, Models, History, Nature, and so on. Anything and Everything!
The very first fanlisting (for Buffy The Vampire Slayer) was created in May of 2000 and the network has been growing by leaps and bounds ever since. There are currently many thousands of fanlistings in exsistence!
For more information you should visit The Fanlistings.org