[taowaca]

Wordpress footer.php

<?php
/**
* The template for displaying the footer.
*
* Contains the closing of the id=main div and all content after
*
* @package WordPress
* @subpackage Twenty_Eleven
* @since Twenty Eleven 1.0
*/
?>

</div><!-- #main -->

<footer id="colophon" role="contentinfo">

<?php
/* A sidebar in the footer? Yep. You can can customize
* your footer with three columns of widgets.
*/
if ( ! is_404() )
get_sidebar( 'footer' );
?>

<div id="site-generator">
<?php do_action( 'twentyeleven_credits' ); ?>
<a href="<?php echo esc_url( __( 'http://sixserve.com/', 'twentyeleven' ) ); ?>" title="<?php esc_attr_e( 'Free Hosting', 'twentyeleven' ); ?>" rel="generator"><?php printf( __( 'Proudly powered by %s', '' ), 'SIXSERVE.COM' ); ?></a> -
</div>
</footer><!-- #colophon -->
</div><!-- #page -->

<?php wp_footer(); ?>

</body>
</html>

[ExpoFrontier]

It seemed only take effect on WP "default" theme.

If the other one uses theme different from default, customization should be required.