Steve who was riding a Yamaha WR 250X with us in south Laos has been using his Spot transmitter quite actively and it's quite impressive what it can do when used properly.
He's been having a friend monitor is his track data transmitted by the spot and been using the Spot/ Google maps software to show Steve's tracks
This map show's Steve's (our) tracks around Khong Island in south Laos transmitted by the Spot
This one shows Steve's tracks between Pakse and Attapeu in South Laos on off-road route 18A
One more of Steve's routes in south Laos, here using different map software
Here showing a very detailed map in Vientiane, amazing the accuracy that can be derived
One problem Steve told me with the spot, is that the people watching your position data expect you to keep moving. If say you stop for a few hours to fix something or rest, some watching your tracks may assume you have a problem and panic, quite an interesting problem with the device. I think there's an "I'm OK" signal button that transmits that message, I seem to remember Steve pressing it when we were stopped for a while.