Habari Brightkite Plugin
Last night I cranked out a quick and dirty Brightkite plugin for Habari. It pulls the most current checked in data and displays that along with a map on your site. Here on this site, it outputs something along these lines:

Or I could have just pointed you to my sidebar to the right to see it in action here. To use the plugin you'll need a Google Maps API Key to generate the images. If you don't already have one, you can get one for free from here.
The latest version can be grabbed from the Habari Extras repo. Installation instructions are up on the wiki here. Feel free to contact me if you hit any issues.
