After affiliates signup, they can use script search link (portal link), which is provided at Affiliate tool. But if they want to host unique designed portal file on their web hosting place, they can apply this editable portal feature.
If they do not use this feature and you let them host their own portal file, you will not be able to track the traffic resource. Therefore, if you want to track traffic resource, ask your affiliates to use this feature.
Affiliates need to copy and paste their full HTML code in the text box on the "SET UP YOUR PORTAL"
If you set manual approval on site general config
you will find those applied portal page on portal page under member management
click "->" then you will see what is their HTML(keyword etc)
If the HTML is fine then click GREEN button
After your approval, the affiliate can use portal link with their edited design,
http://www.YOURDOMAIN.com/portal.php?uid=userid This link, they will see exactly what they submitted from teh form.
OR people can grab HTML code to create a html file and host it on their own hosting place. If affiliates saves this code as a HTML file and upload it on their host even if they host portal page on somewhere else
then you CAN track all referral URL