Ah well , you helped Firefox set a new world record, not get a certificate to show for it too. Realising that fans would probably want to show off their feat spread Firefox is allowing people to generate certificates.
Here is what they look like :
Get your own certificate from : Spread Firefox
The funny part is i used IE to generate that certificate just to check it.
Also this has been a great marketing exercise, lets hope Microsoft realises this and their next Windows Update is also documented.