Why is google innovative ?

http://www.bing.com/search?pc=AMAZ&form=AMAZWB&setmkt=en-US&q=history+of+search+engines

That didn't help

You need to read about the development of search engines, from their beginnings to now. Then you should be able to clearly see how Google is not only different from other search engines, but WHY. It's the WHY that indicates their innovativeness.

http://www.answers.com/innovation