Rated 4 out of 5 stars
A bit confusing to set up. The API key is the one on the Soul's page, which is different from the "Die2nite map tool updater".
Also note: in Firefox 4, you'll need to use "Barlesque" so that your UI doesn't look too ugly. Enable the "Add-on" bar to use.
The original site should be updated more often, and should be translated.