spoof:// format error / example page

well you probably didnt format the spoof url correctly

the format should be like
spoof://www.test.com;ref://www.spooftest.org

!! new due to a suggestion from paul the spoof:// url can now be called without a ref:// part and the first part will behave like url=ref -- test case:
spoof://refspoof.mozdev.org/referrer.php !!

small step by step guide

1. enter your destination url in the url bar like: "http://refspoof.mozdev.org/referrer.php" 2. enter your wanted referrer in the refbar like: "www.spooftest.org" 3. press the spoof button on the left side of the refbar 4. the referrer.php test page is shown displaying your used referrer

test if/how the referrer is sent

now a place i set up to test the referrer (one of many environment variables) using the spoof url format:
spoof://refspoof.mozdev.org/referrer.php;ref://www.spooftest.org/spoof

note that the referrer domain isn't case sensitive in contrast to the server path:
spoof://refspoof.mozdev.org/referrer.php;ref://www.spOoFtEst.org/SpOOf

small gimmick

i included another pseudo protocol handler to accept hxxp:// links to suppress any referrer
.. so you could reformat http and text links using GreaseMonkey on an online page (script included on the help page )
test case on http://refspoof.mozdev.org/referrer.php

blurb

for a litte fun this was the error catch prior to this page.