When you use a web proxy your browser sends all requests to the proxy which acts as an intermediary between your browser and the web servers. This keeps you anonymous to the web servers. You can set the proxy in your browser’s settings. With Google Chrome the fastest way is to start the browser from command line with –proxy-server=server:port option.

google-chrome --proxy-server=27.106.62.238:8080

You can find several free public proxies on the web.