Exctract and upload cat-plugin.php to the PLUGINS folder in your WordPress MU installation
Activate the plugin on your primary MU blog
Click on the "Category Mapping" admin menu to setup your mappings
Map MU blog categories to the top level blog categories. More than one category can be assigned.
Add the "Mapping Widget: All Categories" widget to your sidebar to view all of your top level blog categories.
Click any category on your blog to view all posts filed under that category based on your mappings. Posts will be loaded from all blogs across your MU network and will link back to the appropriate blog post.
Requires: 2.6 or higher Compatible up to: 2.7 Last Updated: 2009-2-7 Downloads: 4,248