Have you ever been to a site and saw this cool feature? They have a link in their top
navigation to something like Stumbe! or Read Random Articles, or some other creative text.
When you click on that link, it takes you to a page that displays one random page. Each time
you refresh, you are delivered with a new post. Well this trick is just for you then.

You would need to follow the trick #1 in this article to create a custom page template.
And simply paste this code in there....

    <?php
    query_posts(array('orderby' => 'rand', 'showposts' => 1));       
    if (have_posts()) :
    while (have_posts()) : the_post(); ?>

    <h1><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h1>

    <?php the_content(); ?>

    <?php endwhile;
    endif; ?>

This is a simple WordPress Loop that is running a query to display random posts and the number 1 in there is telling WordPress to only show 1 post. You can change that number, but most of the time people do it one post a time.