Heartbeat is the fanlisting for the hip-hop boy band 2PM of JYP Entertainment, consisting of Junsu, Nichkhun, Taecyeon, Wooyoung, Junho, and Chansung. This fanlisting is listed under the Musicians: Bands/Groups category. Thank you Wendy for adopting this to me.
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.