More FUD

I'd hate to point it out, but using phrases like 'remotely scan all variables' implies that they're somehow connecting to your Firefox application and reading all your data.

The truth of the matter is that a boring bit of Javascript can run when you're browsing a web-page and post which plugins you're using off somewhere. That's so scary, they might find out that I use Firebug, alert the authorities.

Believe it or not, you can run methods in ActiveX/COM objects through Javascript in IE, run to the hills!