Google’s Game-Changing Phone  —  Mobile biggies are quaking at the idea of competition from a free, ad-based service  —  Imagine your cellphone as a mini marketing machine.  As you head into your car after dinner, a text alert pops onto the screen of your handset announcing the 9 p.m. lineup at a nearby cineplex.

Source:   Business Week

Link:   http://www.businessweek.com/magazine/content/07_41…