public static function get_spam_count( $type = false ) {
    global $wpdb;

    if ( !$type ) { // total
      $count = wp_cache_get( 'akismet_spam_count', 'widget' );
      if ( false === $count ) {
        $count = wp_count_comments();
        $count = $count->spam;
        wp_cache_set( 'akismet_spam_count', $count, 'widget', 3600 );
      }
      return $count;
    } elseif ( 'comments' == $type || 'comment' == $type ) { // comments
      $type = '';
    }

    return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(comment_ID) FROM {$wpdb->comments} WHERE comment_approved = 'spam' AND comment_type = %s", $type ) );
  }