Anyone who has signed up recently for cell phone service has faced a stern test in trying to figure out the cost of carry-forward minutes versus free calls within a network and how it compares with the cost of such services as push-to-talk, roaming, and messaging. Many, too, have fallen for a rebate offer only to discover that the form they must fill out rivals a home mortgage application in its detail. And then there are automated telephone systems, in which harried consumers navigate a mazelike menu in search of a real-life human being. So little confidence do consumers have in these electronic surrogates that a few weeks after the website www.gethuman.com showed how to reach a live person quickly at 10 major consumer sites, instructions for more than 400 additional companies had poured in.

A version of this article appeared in the February 2007 issue of Harvard Business Review.