I've been excited about this since they announced the possibility about a year ago. Then I read this:

Sprint says it should start operating by the end of the year and will provide competition to Internet connections offered by Comcast Corp. and AT&T Inc.

"We're not building another cellular voice network," said Barry West, Sprint's chief technology officer. "Our killer application for this new network is mobile access to the Internet."

West envisions that a mobile Internet will spawn totally different services, such as cheap radio tags for airport luggage that would assure an end to lost bags. Or billboards that change their messages to appeal to the age and gender of people walking by them.

"Low-cost chips and pervasive wireless will change everything," he said.

I apologize if you can only view this if you sign up for the Trib online. Sometimes they'll let you view one or two stories without having to sign up. Hopefully that's the case here.