iWP.me

Yes there are so many plugins that can help you display random posts , But you know that plugins will slow down your WordPress blog. Here I want to show you how to dis play random posts without plugin.

Just add the codes below to your sidebar or anywhere you want:

< ?php $rand_posts = get_posts('numberposts=5&orderby=rand');
foreach( $rand_posts as $post ) : ?>
<li><a href="<?php the_permalink(); ?>">< ?php the_title(); ?></a></li>
< ?php endforeach; ?>

The 5 in the codes above is the numble of those posts will display. Yes, it is very easy!

[via WordPress Codex]