I have signed up for the new Yahoo app fireeagle it allows you to update your location then present it to a webpage on the internet.
You will need a GPS enabled phone, a fireeagle account, a blogloc accoount then your off. Just create a page using the code provided.
If I give you the password you can see my location at http://neilbaldwin.net?page_id=934 and if you know my pets name you have got it.