WordPress doesn't have a great documenting system. In fact, it's almost impossible to find exactly what you're looking for in the WordPress - Docs area. The table of contents looks organized but the deeper you dig, the more unorganized it becomes.

While I was searching for some PHP code in the documentation, I ran across something interesting. Did you know that you can copy your theme's index.php file to two other files, archive.php and category.php and edit them to do something different than what your blog does now? When you click on a category in your category widget, your blog is using the index.php file to find the appropriate posts. When you click on a month in your archive widget, it again uses the index.php file to find the appropriate posts.

I copied mine and the edited each to remove the actual article, the advertising, and a little bit more. Go ahead, poke around there if you're even remotely interested. I believe the search function works with the index.php file as well, but I haven't looked far enough into it to see if there are any changes that can be made to it.