[thisislame]

Why would I ever want my browser to have access to anything outside its running context? In what universe is this a good idea?!

I don't even want it to have access to the clipboard until I affirmatively paste contents!

The browser is a window into an unsafe world of shit you don't trust or control (also known as THE WORLD.) It's SUPPOSED to be at a remove from your local resources. Lack of integration is a FEATURE.

Creating browsers (and add-ons) without this design tenet from the outset is how you end up with MSIE and Flash.