On PHPMaster.com today there's a new tutorial for the WordPress users out there looking to work with dynamic content and shortcodes to make your site easier to use and to bring more content to user's attention.

The advantages to using shortcodes are obvious. First and foremost, it allows page designs to become far more unique. It also relieves the website administrator from having to create a large list of custom fields in order to perform basic content insertion. [...] And, finally, shortcodes allow a design to come alive and be truly dynamic and interesting to the end user. Too many WordPress blogs and magazine websites have adhered to the format of a big title, a standard block of text, and comments. That no longer has to be case.

They talk about using the "functions.php" file for the custom functionality, who to use them in your posts and how to use them in the theme-specific instances. Using the "add_shortcode" you can relate these custom functions to their codes for both simple and more advanced calls (code included).