Index: options-reading.php
===================================================================
--- options-reading.php	(revision 25568)
+++ options-reading.php	(working copy)
@@ -150,7 +150,18 @@
 	<input id="blog-norobots" type="radio" name="blog_public" value="0" <?php checked('0', get_option('blog_public')); ?> />
 	<label for="blog-norobots"><?php _e( 'Discourage search engines from indexing this site' ); ?></label>
 	<p class="description"><?php _e( 'Note: Neither of these options blocks access to your site &mdash; it is up to search engines to honor your request.' ); ?></p>
-	<?php do_action('blog_privacy_selector'); ?>
+	<?php 
+	/**
+	* Fires after the default privacy options are printed on the screen.
+	*
+	* This action is required in order to add additional values to the privacy options form. When called, the 
+	* form's default radio buttons are converted to check boxes, and the 'Site Visibility' heading is changed 
+	* to the more specific 'Search Engine Visibility.'
+	*
+	* @since 2.1.0
+	*/
+	do_action('blog_privacy_selector'); 
+	?>
 <?php else : ?>
 	<label for="blog_public"><input name="blog_public" type="checkbox" id="blog_public" value="0" <?php checked( '0', get_option( 'blog_public' ) ); ?> />
 	<?php _e( 'Discourage search engines from indexing this site' ); ?></label>