I found a site where people submitted a form and the page they were redirected to had an link. It looked something like www.company.com/r=3245. The person could then email the link to their friends and if their friends clicked the link and filled out the forum the original user was credited as getting a referral to the site. I wish I could remember the site to give people examples but I don’t have the URL anymore. My questions are: 1. Has anyone ever seen something like this? 2. How complex would it be to build something like this? 3. Does anyone know of any free versions? Thanks,
its quite basic: a database with id and redirection url, and if someone visits your index page with a parameter "?r=1234" you get the value of "r" (1234 here), search your database for the url with id 1234 and do some redirection like header("Location: http://website.com/?affiliate=5678"); PHP: - done!