If you want to visit a web site without the web server being told where you are visiting from, you can use an anonymous proxy.

In general, these are a security problem, because the web server may need to distinguish legitimate visitors from illegitimate ones, on the basis of where they are visiting from. Users coming through the anonymous proxy don’t reveal where on the internet they are visiting from.

However, I have found anonymous proxies to be useful to simulate outside visitors to the web site hosted by the computer I am using. Such visitors will typically visit www.milindspandit.org or www.himalaya-capital.com, whereas I visit localhost to view my site.

www.proxify.com is the anonymous proxy server I use.