Dave Tuttle keeps the telecommunications industry on its toes. The 44-year-old computer programmer takes both telephone and broadband service from provider NTL at his home in Cheam, England, and gets a 40% discount on the broadband. He used to subscribe to NTL cable television for an additional $70 a month until he discovered he could install a set-top box that allows British residents to receive digital channels without paying a monthly subscription. Recently he called a friend who was visiting India on a Voice over Internet Protocol (VoIP) service that allows users to make toll-free calls to each other via...
