I haven't had a chance to try Sprint's new service, but I will. (see Wash. Post article)
We haven't seen consumers demanding this service much yet, but with more devices with full browsers, larger screens, and access to faster networks, it is only a matter of time. While the adoption is low today, about four times as many cell phone owners (that we've surveyed) say they are interested in the service as have used it so far. That's good news for the industry.
Once these shopping applications are paired with detailed inventory and promotions, it's easy to imagine that consumers will be drawn to such services – especially for sale items or those that will "expire" (e.g., concert tickets for this evening).