A colleague & I were discussing those wonderful and really useful USB flash drives and I thought what he said would be a useful reminder to us all.
I know you are not the careless type but, I found in the car park of roadside eatery last night: a 256MB Flash Drive that someone had dropped. It was in a puddle of water and had been run over by a vehicle (I guess). I let it dry out overnight and amazingly it still worked when I plugged it into my machine.
I think I've managed to locate the owner but only after browsing through some of his documents - there are some budgets and sales figures there that I didn't nose through but it alerted me to the dangers of these things. I'm waiting for him to call me back.
Hopefully you have marked the exterior of your drive so that it can easily be returned in the event of loss and password protected the documents on the drive.
Needless to say, this reminder prompted me to ensure the drive is suitably marked and protected. Is yours?