Some work places or offices has restrictions on using some websites. For example many offices ban social networking sites like Orkut, Facebook, Twitter in office. To overcome this problem you can either use proxy sites or proxy servers. But finding a nice proxy site that can open any domain address is a pain. Why don’t you create our own proxy server. It is possible with the help of Google app engine and python.
By using this proxy site you can open any websites but you can’t access those websites which offers login.