Implementing rel="next" and rel="prev" on Wordpress

gistfile1.aw

/*
This will work on WP 2.7.0 on up on the commonly used get_xxxxxxx_posts_link call.

From Google:
http://googlewebmastercentral.blogspot.com/2011/09/pagination-with-relnext-and-relprev.html
*/

add_filter('next_posts_link_attributes', create_function('$attr','return $attr.\' rel="next" \';'));
add_filter('previous_posts_link_attributes', create_function('$attr','return $attr.\' rel="prev" \';') );