This plugin lets you assign any WordPress page to act as a category page for your blog posts.
Each of your post categories can be assigned to a category page using the Category edit facility.
On a category page, standard page content is displayed first, followed by a list of all post titles for the category. A link to the category page is automatically displayed at the bottom of each blog post for that category.
This idea is commonly referred to as “Theme Pages” or “Authority Pages”
Compatible with both WordPress and WordPress MU (WPMU).