Some things amaze even me. Now this one has been around for a while but I still think the idea is cool. In some races they will send an SMS message (a small text message of up to 140-160 characters) to the cell phone of a friend/family member with your time/place as you cross at certain points in the race. In Paris they will be sending out an SMS at the half way point 21.1km and at 30km.
The service is being offered by Gaz de France. In case my explanation was not clear, here is an animation they put together demoing the service: http://marathondeparis.jetmultimedia.fr/img/PopUp.swf
So far the site to register for this service has been flaky. I can not figure out the combo of name and birthdate it wants from me to register me. No error mesages, just a little > Invalid < message.
So once I figure out how to get into the site I will see how many people I can register. If you are interested in me adding you to the list then send me a mail with your cell number. Family and friends first. I will also try adding my twitter feed so that it gets twittered. That will show up here or on the right or on my feed if you are subscribed.