About web proxies and anonymous web surfing

Proxies are commonly used for several reasons: security, load balancing, data caching in order to reduce bandwidth demands, and censorship or filtering. Filtering proxies insulate you from objectionable elements of Webpages such as cookies, ad banners, dynamic content like Javascript, Java Applets and ActiveX controls. Some anonymous proxies encrypt your Web communications, protecting you from routine monitoring or even dedicated surveillance. Be careful, though, not all proxies are anonymous!