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!
What is a Proxy, and why do I want to use it?
A proxy is a server is like a "buffer-connection" between your computer and the internet resoruces you are accessing. The data you request comes to the proxy first, and then the proxy sends that information on to you. Anonymous Proxies hide your IP address and thereby prevent internet servers from knowing exactly who you are. Since they do not provide anyone with your IP address, they effectively hide any information about you and your reading interests. Not only that, but most Anonymous proxies hide the fact that you are using a proxy. There are tons of "public proxy servers" out there which are free and open for anyone to use, however most of these are not anonymous. I am going to focus on finding those free AND anonymous ones.