Amazing Firefox

I was in a rush checking my email,so i typed wrongly. But from the typo, I found some secrets of firefox(an internet browser in case u dunno wat m i talking about) the alphabet tat I put in Url bar was only "W" and i pressed "enter", i was a bit frustrated of myself coz the typo. but guess what, firefox brought me to American House of Agong-The White House... I was wondering what the heck happened.. why i could be brought to this site.i remembered i just pressed "w" only... so i retried.. it brought me to the American Agong House also... i was amazed... wah this white house very powerful to influence the internet regulator to have such shortcut key in the url bar... so i tried other alphabet , sure i started with "A" the first letter.. firefox brought me to Apple website ... I again amazed.. wah , these big/powerful companies/government agencies so GENG !! below are some testing result of the alphabets: S- McDonalds.. (however,i connected to other url when i tried on fren's pc) V- V for vendetta warners brothers url Q- www.q4music.com D- Dlink G- Google and some other not-so-famous urls.. Next, i thought of "why not trying TYC?" it brought me to texas youth center.. How about "XXX"? haha.. well, i wasnt connected to porn site .. but sonypictures.com This little fun can only applies to Firefox.. i tried on IE .. no effect.. I wonder if there any trick behind firefox.. do they sign contracts with these website? or is it just the DNS server magic? if u know y,could u pls share with me the reason? haha..if u feel sien .. wat if u go n try ?