Given the ubiquity of search, soon everyone will bee Googling everyone else. What might it mean if someone isn't in the index? Does that mean he is of a certain class, either too low to be noticed by search's insatiable spiders, or so rich as to be able to avoid them altogether? Certainly such a person - a person who is not in the index - will have a cerain air of mystery before too long.
John Battelle: The Search