Gotta love that "bright kid", whoever he is.
I first became aware of Firefox through a very computer literate friend (a computing guru/savant, actually) maybe five or six years ago. He wouldn't leave me alone until I dumped IE for Firefox.
After using it for only a short time, I was highly impressed with how superior it was to IE. I've never looked back, and have converted every IE user I know.
Once in a while, I have to open IE for some MS-only application. I always close it as soon as I'm done, and re-open Firefox. IE just can't hold a candle to Firefox for user friendliness. I also avoid IE because of its well-known vulnerabilities to malware.
http://en.wikipedia.org/wiki/Blake_Ross and http://en.wikipedia.org/wiki/Dave_Hyatt
Ross is about 23 years old now; he was in his teens when he started Firefox. I usually see Ross given primary credit, but both contributed.