Your phone could let you know if someone on your buddy list is within five blocks of you. Just zap them a message. In wireless, as in real estate, location is everything. Your cellular carrier can now tell roughly where you are by triangulating your signal's distance from various cell towers. Then all sorts of possibilities arise.
Navigation is one potentially lucrative category.
But the big prize is mobile commerce. Wireless Web companies are enthralled with the idea of m-commerce, as it's being called, because it puts customers in their crosshairs. Get a free muffin with your Frappuccino. But to prevent your phone from becoming a walking, talking spam can, you'll be able to customize your preferences on your wireless portal. If you want it right now, you can dial up the Net and order the CD on the spot.