where do you know firefox from?

[Rid©ully]

Are you asking "Where did you find out about Firefox?"

If so, IE5 wasn't working, and Netscape had folded, so I tried a new browser. It was recommended by a friend, and I've stayed with it as my main browser ever since. "Social Media" didn't exist back then (2005)

Now I also use IE8 (for insecure things), Chrome, and Opera, but mainly Firefox, as it allows me to use greasemonkey scripts.

You'd probably do well to get in touch with Mozilla - http://www.mozilla.org/contact/ - they're the people behind Firefox and as they are open source they'll be happy to answer any question you have.