Geolocalisation - when you want it

I loved this approach to geolocalisation by Finnish innovators Puskaradio. You download their application to your phone. Whenever you want to tell people where you are you use it to send an SMS to them. The service then picks up your GPS location and provides the recipient with a map of where you are. I like the fact that it's not always on, and your location is only made available to the specific individuals you want to see it. Basically you're in control. Once downloaded it's as easy to use as a text message (and while downloading itself may be less than straightforward, their step by step user-guide seems to handhold through the process).

(Am slightly less enamoured by their insistence that it's so easy even your mother can use it.)