The purpose of a fanlisting is what it sounds like: to create a list of fans of a particular subject. This site is looking for fans of BNL music videos, new or old. It's not a mailing list, it's just a way to say that you're a fan.

Haven't seen them? Pick up a copy of Barelaked Nadies for a good start, with commentary. Also check out Nettwerk Music on YouTube for more recent videos.