Navizon -- iPhone 'GPS' application
Picked this up on Gizmodo — the application, Navizon (“peer to peer wireless positioning”), uses your cell ID to place your location. Smart. Very similar to the way Jaiku does it.
Link: Apple: iPhone Faux-GPS Hack Works and is Awesome – Gizmodo
The iPhone just got GPS. Well, its actually using peer collected GPS data linked to cellular tower, which Navizon describes as peer to peer location detection. Either way — it actually works. This morning, the Navizon GPS app showed up in Installer.app. After creating a username and login (get this: email NOT required), the free app started up, taking about 30 seconds to find my location accurate within a few hundred feet — good enough to use as a starting point for driving directions. Then it pushes your coordinates, by latitude and longitude, to many, many, many decimal places of degrees, to the map application.