I decided to create a group which I encourage everyone to join. The address is here:
http://www.last.fm/group/Abandonia
A nice thing about it is you can have weekly charts that display the most popular bands and songs for that week between the group members.
Another great feature is the radio. You join the channel and it plays music based on what everyone in the group listens to. This is a great way of finding out about fellow Abandonians taste in music.
I'm going to make a post in the Blah Blah Blah section so we can get more people signed up.