When clicking a blog category within my site I get a long page of every post (shown in full) ever written for that category.
However I notice from e.g. http://wordpress.org/development/2008/04/wordpress-251/, when selecting a category from the side bar, I get a snippet summary of posts within in that category. Similar to how search results are displayed.
Does anyone know how do that? I have been searching for a plugin for a long time with no joy!