proxy server is a an application that doing something as an secure channel for http request from clients seeking resources from other servers. A clients connects to the proxy server, requesting some service, such as a file, web page, resource available from a another server and the proxy server checks the request as a way to simplify and control its complexity.Last few years, most proxies are web proxies, facilitating access to web content on the world and usually serve our personality. A caching proxy server accelerates http requests by receiving content saved from a previous http request made by the same people. Caching proxies keep copies of frequently requested resources, allowing huge networks to significantly reduce their upstream bandwidth usage and costs, while significantly boosting performance. All can hide your computer ip address, also can give secure things, like to evade you from some tracking ads networks with bothering ads. I will tell you, with you can bypass some youtube, facebook, video and many other social network limitations, unlock youtube video for your country, bypassing it.