FAQ-suggestion, the 'referer' bug.

Hello!
For the html-validator FAQ's last answer, 
http://validator.w3.org/docs/help.html#faq-referer , you mention that 
some security software strips the "referer" info. However I am told that 
this is also a thing that the oh-so-beloved Firefox browser does - it 
simply wont supply such info. I guess that's why people love it, makes 
bandwidth stealing in Google's image search a bit easier, doesn't it ;) 
Well, I thought it might be worth mentioning this to people if the 
"/check/referer does not work" error comes up, tell them it might just 
be their browser!

cheers! And thanks for a fun, useful and educative site which has helped 
me a lot :)
Kristine