T-Mobile USA showed off the G1,When and how much?

The first phone that harnesses Google Inc.'s ambition to make the Internet easy to use on the go was revealed Tuesday, and it looks a lot like an iPhone.T-Mobile USA showed off the G1, a phone that, like Apple Inc.'s iPhone, has a large touch screen. But it also packs a trackball, a slide-out keyboard and easy access to Google's e-mail and mapping programs.T-Mobile said it will begin selling the