New toy!  I have a Spot Connect now.  Yet another piece of technology to take on the trail.  This unit uses 2 AA Lithium batteries for power and links to my iPod via Bluetooth.  I can send text messages as well as post to Twitter or Facebook through a satellite up-link.  As soon as I get $100 saved up for my first year of service, I'll be on the trail for some pre Grand Canyon trip testing.