GadgetAddict - honestly, I'm not too familiar with how MobileMe works, so if someone obviously tried to contact me about returning their iPad, I would.
I misread the OP and didn't notice the part about the numerous messages sent to the iPad.
But still, you've gotta admit: leaving your iPad on a plane, then leaving the terminal, and then the airport? Bigggg mistake. Be careful next time with your iPad.
True, it is really careless to forget a device which in this case costs at least $630. That's a month's paycheck for a lot of people!
The employee who took it might not be an "ordinary" thief. He/she thought could be lucky but obviously was outsmarted...