Q1. What is a Anonymous Referer/Null Referer/de-Referer ?
Ans. A Anonymous Referer/Null Referer/de-Referer is a webpage that is used to redirect users to different websites. Usually, web browsers send small pieces of information when following a link, including a so-called "referer". The referer is the URL of the page the user came from, giving webmasters the option to track back the origin of users visiting their sites. The dereferer's part is to suppress this information; when analysing their transfer logs, webmasters will track back to the dereferer's URL instead of the original URL.
Q2. Why to use this site ?
Ans. A blank referrer/ de-referer/anonymous referer/null referer increases privacy. Webmasters can use this dereferer tool to prevent their site from appearing in the server logs of referred pages as referrer. The operators of the referred pages cannot see where their visitors come from any more.
Q3. How it actually works ?
<a href="<?php nullref("http://www.example.com"); ?>">Anchor Text</a>
<a href="http://www.example.com" onclick="window.location.href=nullref(this.href); return false;">Anchor Text</a>