Re: "No Referer header found!" ?!?

Hello Jason,

As a security measure, browsers usually do not send a referer header
from a from a secure connection, unless the new page is on the same domain.

Eg:
 * https://example.com/page1 -> https://example.com/page2 : referer
header sent
 * https://example.com/page1 -> http://validator.w3.org/check/referer :
referer header NOT sent
 * https://example.com/page1 -> https://otherexample.com : referer
header NOT sent (even though the now connection is secure)

I sugest you change the URI of the icon from
http://validator.w3.org/check/referer to
http://validator.w3.org/check?uri=http://example.com (replacing
http://example.com with the actual URI of your document, of course.)

Regards,

-- 
Etienne Miret