The World Wide Web is now providing hundreds of powerful search facilities, often for free, enabling people to access an enormous amount of information. The most successful search facilities to date are the global flat databases that attempt to put everything in one place. We believe that this approach will not scale. This paper describes techniques and software that we developed to connect together many different diverse search facilities, allowing people to focus and customize their search much better and increase the precision of the results.
Udi Manber, Peter A. Bigot