Cross Site Scripting Control per Parent Page

Hi,

Firstly, a BIG THANK YOU for my MOST IMPORTANT addon.
I would like to make a suggestion, which I consider a SECURITY issue long overdue for implementation.

I am most concerned about a form of cross site scripting that is not being managed properly. As an example everyone will be familiar with, take Facebook. I am happy to allow facebook.com when I am on the facebook site, but I am NOT HAPPY about not being able to DISABLE Facebook when I'm browsing another site that has Facebook links in it.

I urge the developers to implement such a function. Even if it means an increase in the number of allows I need to set, I am willing to accept the overhead in favour of increased privacy.

Kind regards,
Nap