The Web contains over 2 billion pages of information, growing by
7.3 million pages a day
Combined coverage of eleven major search engines is 42% of the
Web
No individual search engine covers more than 16% of the Web
Overlap between individual search engines is low, with
approximately 40% of a given search engine's content unique
The biggest search engines are currently FAST and Google, with over
600 million pages indexed
For more information and updates see Search Engine Sizes
at Search Engine Watch