What's a fanlisting, you ask? Taken from TheFanlistings.org:
A fanlisting is simply an online list of fans of a subject, such as a TV show, actor, or musician, that is created by an individual and open for fans from around the world to join. There are no costs, and the only requirements to join a fanlisting are your name and country. Fanlistings do not have to be large sites (although some are), they are just a place where you can sign up with other fans.
Disclaimer: This is a non-profit fan site that is in no way affiliated with Changmin, Dong Bang Shin Ki, Tohoshinki, SM or Avex. I am just a fan.