The main page file is index.php, this is the default page where surfers will see the info of your service.
Advertiser Join Page
The Join page (the file join.php) with parameter advert=1 is the registration
page for your advertisers
Member Join Page
The Join page (the file join.php) without advert=1 parameter is the
registration page for Publishers.
Login Page
Login page (the file is login.php) for your members to buy credits, check
their status and change their info.