Plugin to modify Content Tags to only apply to posts/pages. Also hides it's admin column. Shows extendibility within a plugin for my WordCamp San Diego 2013 presentation.

modify-content-tags.php

<?php
/*
This code could be placed in a plugin or your theme's functions.php file.
*/
add_filter( 'szbl_content_tags-settings-post_types', 'szbl_content_tags_post_types', 10 );
function szbl_content_tags_post_types( $post_types )
{
    // only allow posts/pages to receive Content Tags.
    return array( 'post', 'page' );
}

add_filter( 'szbl_content_tags-settings', 'szbl_content_tags_hide_admin_col', 10 );
function szbl_content_tags_hide_admin_col( $args )
{
    // hide the admin column
    $args['show_admin_column'] = false;
    return $args;
}