1. Go to this page http://www.s33.net/rec/create.
2. Choose a redirect URL and a password and the script will create you a link.
3. Send this link to anyone you know (online) and the script will record their I.P.
4. Now Click Login at the bottom of that page to login and view the IP addresses of those who have visited your link.
5. Login page requires you to enter the link ID and Password.

via webtrickz

pic via videojug