Invisible Web (a.k.a. Deep Web) is the galaxy of documents that are not accessible through open search engines like Google. Examples are authenticated content, non-textual content, and custom content. By some estimates the Invisible Web is already fifty times bigger than the World-wide Web.
Just the very nature of the Invisible Web -- need to keep the data private -- makes centralized computing impossible. This means that there are lots of opportunities for low-cost search engines, and low cost subject directories, and content management systems.
I think that most tech. companies are too much focussed on the visible web, and not so much on the Invisible Web. I am interested in talking (
) to engineering types who are plumbing the Invisible Web.
