In my opinion it isn?t possible to create a anonym referer without a referer service (for example anonym.to) which will complety hide your domain...but I am also not an expert^^
But you can try it with one of these sites:
http://club60.org/testref.php
or
http://www.v4hn.de/code/referer.php
When you use the hack from redlabour it will be redirected like that:
http://www.redlabour.de/forum/links....rg/testref.php
or
http://www.redlabour.de/forum/links....de/referer.php
So only the thread-id will be hidden for the other site...the main domain name is still visible...