A new application has been released for Android Phone and that you can use if you need to send your GPS location to someone in an SMS message : Gps To Sms.
This app is automatically translated into english (US) if you install it on an english device or in french for french devices.
The sent SMS contains a link to Google Maps that the recipient can click to see your location on a map.
Here are some screenshots, and here is the link to the project on Sourceforge (click here).