On most of these sites, proxy settings, you can choose surfing, for example - include blocking scripts or cookies, disable image uploading. Check operation of these services in practice, you will notice that they really intended to substitute ip, but still not hide information about the browser, while some of them have problems with displaying Russian text encoding. Chase Koch brings even more insight to the discussion. Proxy Servers For those who do not know: the proxy server is a dedicated computer through you can go online. Maybe you already use a proxy server for your isp or corporate proxy, if you have Internet access on your desk in your office. In the case of Internet service proxy server can be used to block access to sites with inappropriate content, limiting traffic and for security (virus protection, intrusion on users' computers, and etc.) But there are other so-called public proxy servers, through which, if desired, the user can also go online.