For starters, why on earth would you link to a site for "proof"? That makes absolutely no sense. Neither does acknowledging the likelihood of a No Advertising policy and ignoring it anyway. Furthermore, this is an Introduction forum, not a support forum. If you can't even take the time to post in the correct area, I'm not going to waste my time responding to the question. In fact, topic locked.
To remove the portal copyright notice, open the following file in notepad or other editor: admin/applications_addon/other/portal/modules_public/portal/portal.php Find and delete the following section: $this->registry->output->addContent( "<br /><div class='ipsType_smaller desc lighter right' style='clear: both; text-align:right;'>Portal v1.1.0 by <a href='http://www.devfuse.com/' title='DevFuse home page'>DevFuse</a> | Based on IP.Board Portal by <a href='http://www.invisionpower.com/products/board/' title='IP.Board Product Page'>IPS</a></div>" );