"Google Latitude"

Google Latitude can locate your kids or friends using gps or cell phone tower info.

Supported phones:
- Android-powered devices with Maps v3.0 and above. G1 users in the US will be receiving Maps v3.0 in a system update soon.
- Most color BlackBerry devices
- Most Windows Mobile 5.0 and above devices. Note: Some Windows Mobile devices don't support cell-ID location detection.
- Most Symbian S60 devices

Check it out: http://www.google.com/mobile/default/latitude.html

Or use it at:

http://www.google.com/latitude/intro.html#utm_campaign=en_us...