This post was published 2 years 7 months 2 days ago. Therefore, it is likely to be outdated and may no longer be valid.
WordPress 2.3 allows you to tag posts.
In the theme I use, to display the tags on your blog’s post you need to edit your ‘single.php’ file.
Log in to your WordPress dashboard then select Presentation > Theme Editor
Select the ‘single.php’ file from the right-hand sidebar.
Locate the following line of code (it’s located just after <!--Post Meta-->):
<!--<?php if (function_exists('the_tags')) { ?><strong>Tags: </strong><?php the_tags('', ', ', ''); ?><br /><?php } ?>-->
The HTML comment tags ‘<!-- … -->‘ (at the begining and end of this line) need to be deleted (these tags comment out code thus preventing it being read in a browser).
Finally, click the ‘update file’ button then refresh your site to view your tags (assuming you’ve added tags your posts).
Like most things, it’s easy when you know how.