WordPress 2.3 now has built in tags. Tags are similar to categories.You’ll need to have these installed and running.
WordPress 2.3
Tag Suggest Thing
Tag Suggest Thing by the author of Ultimate Tag Warrior will query Yahoo for tag suggestions. This is easier than trying to come up with tags yourself and type them in.
At http://richgilchrest.com/how-to-add-wordpress-23-tags-to-your-current-theme/ we learn how to add a tag cloud to your theme. There are two suggested places this would be good at. As a widget using Execphp, or directly in your themes code.
If you are using execphp you would add in a simple line of code that looks like:
<?php wp_tag_cloud(’smallest=8&largest=36&’); ?>
For more options see the WordPress document. (smallest, largest, unit, number, format, orderby, order, exclude, include)
The other way to see a tag cloud is to edit your theme directly. You can add it to each post, or add it to a side column. To add it to each post you will edit your themes index.php and single.php. And add code like the code above.
If want a tag cloud in a side bar you would add this code to your themes sidebar.php.
<?php if ( function_exists(’wp_tag_cloud’) ) : ?>
<li>
<h2>Popular Tags</h2>
<ul>
<?php wp_tag_cloud(’smallest=8&largest=22′); ?>
</ul>
</li>
<?php endif; ?>
If your theme is widget ready, consider using the tag cloud widget instead.