I was scanning the Web for information on how to add a Google AdSense block under only the first post on a Wordpress installation. While I found a good deal of information, I couldn’t find very much of anything that applied specifically to the popular K2 theme.

I’ve included a short tutorial below for adding an AdSense block under just the first post on your Wordpress K2 installation.

1. Open theloop.php in your Theme Editor
2. Find the following section of code:

   <?php } ?>
   
   <?php /*
   	The 'next page' and 'previous page' navigation for permalinks have to be inside the loop.
   	The exact opposite is true for the same navigation links on all other pages.
   	Also, we don't want them at the top of the frontpage: */
   

3. In the gap between the php’s add the following line of code so that the section now looks like this:

   <?php } ?>
   <?php $showAdSense = True; ?>
   <?php /*
   	The 'next page' and 'previous page' navigation for permalinks have to be inside the loop.
   	The exact opposite is true for the same navigation links on all other pages.
   	Also, we don't want them at the top of the frontpage: */

4. Now find the following section of code:

   <div class="itemtext">
   	<?php if (is_archive() or is_search()) {
   		the_excerpt();
   	} else {
   		the_content("Continue reading '" . the_title('', '', false) . "'");
   	} ?>
   <?php link_pages('<p><strong>Pages:</strong> ', '</p>', 'number'); ?>
   </div>
   
   <!--
   <?php trackback_rdf(); ?>
   -->

5. Modify the code section above to look like this:

   <div class="itemtext">
   	<?php if (is_archive() or is_search()) {
   		the_excerpt();
   	} else {
   		the_content("Continue reading '" . the_title('', '', false) . "'");
   	} ?>
   <?php link_pages('<p><strong>Pages:</strong> ', '</p>', 'number'); ?>
   </div>
   <?If ($showAdSense) { ?>
   <div style="float:right;padding:3px;">
   	AdSense block as provided by Google
   <br /><br /><br /><br />
   </div>
   <?php $showAdSense = False;} ?>
   <!--
   <?php trackback_rdf(); ?>
   -->

Now you can enjoy abiding by Google’s TOS rather than grossly abusing them.