Proxy server is a computer that offers a computer network service to allow clients to make indirect network connections to other network services. Then client connects to the proxy server, make request and proxy server forwards him to wanted data. Also proxy server can be used for caching data, in that way increasing performance, but the main role of proxy server is to secure web surfing, hide requester IP and maybe other information (ie country).

Several types of proxy servers:


So if you use proxy, you're making your web surfing more anonymous and much secure (with truster proxy server).

You can find Online proxy list here or check by yourself online proxy server here