A couple great stories from Matthew Maier at Business 2.0.com.
What happens when GPS meets your cell phone.
This is the future of location-based services. Long heralded as one of the wireless industry's next big things, GPS-based mobile services are only now becoming useful and attracting the interest of carriers and consumers alike
Also How your cell phone will become an ad machine .
Mobile marketing will require more than repurposing existing content to fit a small screen. Smart marketers who take into account the personal aspect of the mobile handset -- and understand the opportunities and challenges presented by a device that travels with folks anywhere -- will have access to a highly responsive group of consumers.