About ProxyAn anonymous proxy server acts as a middleman between your browser and an end server. Instead of contacting the end server directly to get a web page, the browser contacts the proxy server, which forwards the request on to the end server. When the end server replies, the proxy server sends the reply to the browser. No direct communication occurs between the client and the destination server, therefore it appears as if the HTTP request originated from the intermediate server. The only way to trace the connection to the originating client would be to access the logs on the proxy server (if it keeps any).
Another common use of anonymous proxies is to access sites which are normally blocked by your upstream ISP. For instance, proxies are often used by people to access sites which have been censored by their companies, organizations or governments.
A web proxy is a type of proxy server that works through a web form. Instead of configuring the address of the server in the browser as is done for HTTP or SOCKS proxies, you simply navigate to the home page of the web proxy. Web proxies hide users identity from the sites they visit, keep cookies at their site, and delete them after each session and selectively remove scripts, images, etc.