Paypal, then receive hack

[paul41598]

Is there a hack or something out there that for instance when you pay, it will redirect you back to your site and you will receive a certain hack that you specify?

For example, I want to create a new usergroup called "allow image in signature" or something. Then I would almost construct some sort of hack store on my forums. A user would click a paypal link to purchase a custom image in their signature. They would pay via paypal, paypal then would redirect them back to my site, and they would be automatically added to that new usergroup that has those permissions.

Then they can set an image in their sig