What is the most reliable way to hide / spoof the referrer in JavaScript?

Question

Normally, the referrer is traceable through:

• JavaScript\'s document.referrer
• The request headers, e.g. PHP\'s $_SERVER[\'HTTP_REFER

Answer 1

A very comprehensive (but short) analysis can be found at:

http://lincolnloop.com/blog/2012/jun/27/referrer-blocking-hard/

this article analyses both methods explained in other answers (js method, iframe redirecting) and finally suggest a mediate redirector page approach, like the one seen in google search links.