Thanks for the info. I just got the Strava app. I have not used it yet, but will on my next ride. The free version doesnt do the live tracking from what I can tell, but it got me curious. I see the Garmin units and app also that support live tracking I believe.
I am an Amateur radio operator (user name is my call sign) and there is APRS available with the radios for similar tracking abilities. Since I use my smartphone for tracking already, though, and 99% of riders are too I think Ill try to expand a bit there first instead.
I like the idea of people logging on to a website to do the tracking, as opposed to buying an app that only works on a mobile device.