<h2 id="related">Related Posts</h2>
<?php  
$rel_tags = get_the_tags();
foreach($rel_tags as $rel_tag)
{
	$rel_tagnames .= $rel_tag->name . ',';
}
$rel_posts = get_posts('tag=' . $rel_tagnames . '&post__not_in' . $post->ID . '&showposts=5');
if (count($rel_posts)) : ?>
	<ul>
	<?php foreach((array) $rel_posts as $rel_post) { ?>
		<li><a href="<?php echo $rel_post->post_name ?>"><?php echo $rel_post->post_title ?></a></li>  
	<?php } ?>
	</ul>
<?php else : ?>
	<p>I can't find any related posts, sorry!</p>
<?php endif; ?>