Google has added friend-tracking to its Google Maps mobile client. The service allows you to use the cell or GPS position of a some-one from your gmail contact list who has consented to be tracked and see their location on your phone or even desktop.
It also adds a twitter-like element, as it allows status updates to be added to the information, allows your friends not just to say where they are, but also what they are doing. The app will also store contact details, meaning calling contacting friends via SMS or e-mail is easily accomplished. In some ways the app seems to be another bold move by Google into the social networking space.
The app is available for Windows Mobile by visiting http://www.google.com/latitude Â from your mobile browser.
See the video below for a tutorial on the application, or visit Google Latitude for more information.