[ant123]

If you want all links in your posts to be nofollow, you have to use post_text instead of post_author_link

Here you go

<?php

/*

Plugin Name: My own tweak for my forums

Plugin URI: https://bbpress.org/

Description: Fine tuning codes for my forum

Author: Your name

Author URI: http://www.myforum.com/

Version: 0.1

*/

add_filter(‘post_text’, ‘bb_rel_nofollow’);

?>

I guess that’s what most people want to do