Users can now create menu badge types using Views! No coding required.
Tutorial screencast on this new feature: http://www.youtube.com/watch?v=4AoZQNg5QOI
Note: The way to define badges has changed. Make sure to run update.php to update your existing badge configuration. Developers, see the README.txt for the new format. (The module will accept the old format as well, but the new format allows arguments, so it's much more flexible.)