In 2000, it was estimated that the deep Web contained approximately 7,500 terabytes of data and 550 billion individual documents. Estimates based on extrapolations from a study done at University of California, Berkeley speculate that the deep Web consists of about 91,000 terabytes. By contrast, the surface Web (which is easily reached by search engines) is only about 167 terabytes; the Library of Congress, in 1997, was estimated to have 3,000 terabytes
do we ever go into the deep web? how do we do that, then? I just cannot comprehend with me wee brain how all this info is stored and linked and available! woooo - head hurts.
the quote is ten years old! Imagine the extent of the unsearchable data now!
http://www.nytimes.com/2009/02/23/techn … amp;emc=th
Last year Google passed the 1 trillion pages indexed mark!
1,000,000,000,000 pages indexed
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