What about a game tracker tags like from a site like http://www.gametracker.com/. I would love to post it on my Clan forums and other forums I visit to promote Wurm Online. It could be simple and just show the server I play on, my name and how many people are playing. Also it could show if the server is up or down. IMO these tags help show support for the game you love and get more people into a game they didn't even know existed.