I tried to set up a page with rated links, but whatever i tried the rating did not show up. as i searched through the wp-includes/links.php i found out that there is no call to get_linkrating(); which explaines why its not working in the current version.
To get it working one needs to add the following to the get_links() function:
if ($show_rating) $output .= ''. get_linkrating($row) .'';