Gizmodo points out a new 3rd party application that has appeared on Installer.app.
![gpsunknown 500](https://images.macrumors.com/t/xh7dkKGyDtyF-EIx0WRpeNdRj84=/400x0/article/2007/09/19/gpsunknown_500.png?lossy)
Navizon uses cell phone towers to pinpoint your location (within a few hundred yards) and is able to push those coordinates to the Google Maps application.
The result? Free GPS(ish) functionality on the iPhone.