There’s been a scary increase in bicycle-vehicle collisions around the Seattle area the past couple years. My wife is confident in my not taking risks, but you never know. We’ve been using Google Latitude in my family since it was in Beta so she can just pull up the browser and check my progress home on the map. I’m told the kids have even asked to see the map so they can point out where daddy is on the map. I’m not sure how much value it really provides if something were to happen, but on nights when I’m late getting home - seeing that little icon moving always makes my family feel better.
Follow us on Twitter
Fan us on Facebook
Suffer Faces on Tumblr
Picking on Mulu
Find us on Instagram
Read us on Android and iOS with the Currents app
Subscribe on Kindle 
I think Latitude is great!
One of my co-workers and I have been testing it.
I am wondering whay phone you are running to post to Latitude, since I have found my blackberry to be a bit spotty on the GPS coverage.
I have a BB Curve 8300. It works fine for this use since super-accuracy isn’t what I’m after. My wife has an iPhone and can pull me up on her phone too. Pletty slick.
ATT also offers a service to track your family members by their phones.