What does "Google" mean?
The name "Google" is a play on the word "googol," which was coined by Milton Sirotta, nephew of American mathematician Edward Kasner. A googol refers to the number represented by a 1 followed by 100 zeros. A googol is a very large number. There isn't a googol of anything in the universe -- not stars, not dust particles, not atoms. Google's use of the term reflects our mission to organize the world's immense (and seemingly infinite) amount of information and make it universally accessible and useful.
I hope all of you know how Googol came to be known as Google and that was by sheer accident. Leave out all of that word-play stuff for the truth is always more interesting. A cheque was issued in the initial stages but then-known Googol was misspelled as Google. So it has stood since then. So where does the word-play come in?
When is Google's birthday?
Google opened its doors in September 1998. The exact date when we celebrate our birthday has moved around over the years, depending on when people feel like having cake.
How is "Google" pronounced?
"Google" is pronounced "goo-gull" (like "noodle," but replace the "n" and "d" with a hard "g"). The double "o" makes the same sound it makes in "moo" and "kangaroo."
Why does the Google logo sometimes change?
From time to time we modify the Google logo in honor of holidays celebrated by our users around the world. These special logos – we call them doodles -- usually run for 24 hours. You can find an archive of our more popular logo variations at http://www.google.com/holidaylogos.html. If this piques your interest, check out our Oodles of Doodles entry on the Google Blog at http://googleblog.blogspot.com/2004/06/oodles-of-doodles.html
For the complete history of Google and its various milestones , just visit the following link