links removal keys

I would like more précisions about links removal keys
At each bottom page there is :

>Powered by Web Wiz Forums <http://www.webwizforums.com> version 7.2 alpha
>opyright ©2001-2003 Web Wiz Guide <http://www.webwiz.net>

Does the donation  only remove this:
>Powered by Web Wiz Forums <http://www.webwizforums.com> version 7.2 alpha

or does the donation remove both links :
>Powered by Web Wiz Forums <http://www.webwizforums.com> version 7.2 alpha
>Copyright ©2001-2003 Web Wiz Guide <http://www.webwiz.net>

Because some web sites have nothing at the bottom of the page
and some others have only :
Copyright ©2001-2003 Web Wiz Guide <http://www.webwiz.net>

Thanks