django-locationtracking (available from Google Code) is a reusable Django app to add location tracking to your own sites through several pre-existing location-based services.
Issues can be reported through the Google Code project and patches are appreciated.
The lightning talk video that introduces it is available on YouTube, and begins at 14:51.
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"Sample" Project The project built during the screencast, available for reference.
Screencast Downloadable Versions:
1280x720 H.264, 449.9MB
1280x720 FLV, 14.65MB
640x360 FLV, 8.61MB
480x270 FLV, 6.46MB