[fel64]

That’s easy enough to do; it’s implemented already in the bleeding-edge not-officially-released version of bbPress (which is actually perfectly stable and bug-free for me). This direct link will give you the currently newest version, revision 817. To activate these super-pretty permalinks, open your config.php and set the pretty permalinks option to 'slugs' instead, then if applicable (you’ll probably know if it is) change the contents of your .htaccess file to whatever /bb-admin/rewrite-rules.php tells you to.