John...I expect that search technology algorithims will be one of the defining aspects of life in this century! Locating and sorting information has always been a major item in scholarship and research......and to see it readily available to anyone with a computer, and to have it learn and refine and EDIT your requests is one of the most amazing bits of wizardry going. And this is a 'science' that is still in relative infancy! 7 years ago, AltaVista was mind boggling, now they barely compete.