If you're thinking about picking up one of those fancy new BlackBerrys, let me explain for a minute or so why that may not be a very good idea.

Research in Motion finally answered the pleas of the BlackBerry faithful for a new device with a promotional blitz today, announcing multiple phones for different carriers around the world. In the U.S., AT&T has committed to selling three BlackBerrys, including a next-generation Torch, the touch-screen version of its smash-hit Bold phone, and a touch-screen-only phone called the Torch 9860. Sprint Nextel said it too will be carrying the Bold and a variant of the all-touch-screen phone called the Torch 9850.