>>...the big search engines crawl less than 1 percent of the known Web. 
Beneath the surface layer of company sites, blogs and porn lies another, 
hidden Web. The "deep Web" is the great lode of databases, flight schedules, 
library catalogs, classified ads, patent filings, genetic research data and 
another 90-odd terabytes of data that never find their way onto a typical 
search results page. <<<
 The gerry.vanagon.com <http://gerry.vanagon.com> archive is part of the 
"deep web." No search engine crawls there, at least not yet.
 As we speak, the search engine companies (Google, Yahoo, Microsoft) are 
formulating search products to mine the deep web, for a price.
 Salon.com <http://Salon.com> had an article about this a couple of months 
ago. The above is an excerpt.