in response to EK's post on my wall, to vote in the war room you go here (http://avatar.wikia.com/wiki/Avatar_Wiki:War_Room) and click on one of the topics under active discussions.

there's a little blue and green button just above the top right corner of the text  - you can click that, and add your opinion, just like you'd edit an article. then click publish, and you're all set!