Enable tags for pages (old code archive) for WordPress.

wp-page-tags.php

<?php

/*
Plugin Name: CF Page Tags
Plugin URI: http://crowdfavorite.com/wordpress/
Description: Add the tags form to pages in WP.
Author: Crowd Favorite
Author URI: http://crowdfavorite.com
Version: 1.0
*/

function cf_post_tags_meta_box($post) {
?>
<p id="jaxtag"><label class="hidden" for="newtag"><?php _e('Tags'); ?></label><input type="text" name="tags_input" class="tags-input" id="tags-input" size="40" tabindex="3" value="<?php echo get_tags_to_edit( $post->ID ); ?>" /></p>
<div id="tagchecklist"></div>
<?php
}

function cf_page_tags() {
	add_meta_box('tagsdiv', __('Tags'), 'cf_post_tags_meta_box', 'page', 'normal', 'core');
}
add_action('admin_head', 'cf_page_tags');

?>