Plugin para comentarios con permalinks en WordPress

add_action('init', 'user_coment_registro');
 
function user_coment_registro() {
 
	$labels = array(
		'name' => 'user_coment',
		//'singular_name' => '',
		'add_new' => 'Añadir nuevo',
		'add_new_item' => 'Añadir nuevo user coment',
		'edit_item' => 'Editar user coment',
		'not_found' =>  'No se encontraron user_coment',
		'not_found_in_trash' => 'No se encontraron user_coment en la papelera',
		'parent_item_colon' => '',
	);
 
	$args = array(
		'labels' => $labels,
		'public' => true,
		'publicly_queryable' => true,
		'show_ui' => true,
		'query_var' => true,
		'menu_icon' => get_stylesheet_directory_uri() . '/admin/iconos/user_coment.png',
		'rewrite' => true,
		'capability_type' => 'post',
		'hierarchical' => false,
		'menu_position' => null,
		'supports' => array('title','editor','custom-fields')
	  ); 
 
	register_post_type( 'user_coment' , $args );	

}

<form action="<?php echo get_option('home') ?>/" method="post">
<input type="text" name="campo1" />
<textarea name="campo3"></textarea>
<input type="submit" name="enviar_usercoment" value="Enviar" />
</form>

<ul>
<?php
	$total=5; // mostrar solo los ultimos 5 comentarios
	$my_query = new WP_Query('posts_per_page='.$total.'&post_type=user_coment');
	if ($my_query->have_posts()) : while ($my_query->have_posts()) : $my_query->the_post();
?>
	<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?> - <br /> <?php the_content(); ?></a></li>
<?php
		   endwhile;
   else:
?>
        <li>No se encontraron resultados.</li>
<?php
    endif;
		wp_reset_postdata();
?>
</ul>

<?php
if(isset($_POST['enviar_usercoment'])){
  $my_post = array(
     'post_title' => strip_tags($_POST['campo1']),
     'post_content' => strip_tags(nl2br($_POST['campo3'])),
     'post_status' => 'publish',
     'post_author' => 1,
	 'post_type' => 'user_coment',
  );

  wp_insert_post( $my_post );
}
?>

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>