Add a Term when a POST is saved

/**
 * Creates a nexus term on publish
 *
 * @param string $id 
 * @param string $post 
 * @return void
 * @author Dan Cameron
 */
function autoadd_nexus_category($id, $post) {
	if( $post->post_status == 'publish' && false === (wp_is_post_autosave($post) || wp_is_post_revision($post) ) 
	&& !in_array( $post->post_type, array('page')) // array of post types that we do not want to auto-create terms
	) {
		wp_set_object_terms($id, array($post->post_title), 'nexus', 1);
	}
}
add_action('save_post', 'autoadd_nexus_category', 10, 2);