Given that competition is about delivering the right information using contextual information, the next interesting question is about the device on which it is delivered. Is PC the right platform? Google already has an alliance with T-Mobile that provides consumers with the Google search engine on the homepage of the new "web 'n' walk" Internet service for cell phones. What about handheld devices like PDAs? Will they become extinct? If competitors are staking out territory in the smart phone market, who will emerge as the platform providers? Large amounts are at stake for players in the ecosystem such as device makers, operating system vendors, application provider and operators (Verizon, Cingular, Vodafone, etc.). .