I am not sure if I can condone any website that promotes phishing attacks. However, sites like this exist, many of them much more malicious than this one. The real trick in IT security is protecting yourself against these types of attacks.
The website http://whatstheirip.com/ will help you plan phishing attacks on your friends or anyone else.
The website and technique is easy for anyone to use.
1) You enter your email address on the site and it will send you an email with fake links that you can use in a phishing attack.
2) You then copy the links and send them to your victim.
3) When your victim clicks on the link they will get what appears to be a bad web page. It will automatically email you their IP address.