Great hack, seems to be working well, couple of issues though.
Where in the Admin CP should I go to Validate added links as I don't see this anywhere?
Also, unvalidated links are appearing in the "Top 10 Visited" page?
Also, I would like to place links.php outside my forum directory, what do I need to change to allow this to work? as I get the following error when I move it right now :
Fatal error: Failed opening required './global.php' (include_path='') in /home/username/public_html/links.php on line 2
Other than that, great hack