Tying together two recent posts, the WiFi tech that Apple is exorcising from it’s app database is the same technology that makes GeoSense work on GPS less laptops.
On a side note I think Sekai Camera was one of the few Augumented reality apps that developed well. The comments places were far more location specific than Layar’s display.
By finding your location with nearby WiFi Access Points. Not such a big deal on iPhone since it has GPS but it just shows how useful a tool it is.