Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
There was a thread about the risks of the iPad launch. You get a nice bag with a large box inside. You cannot make the message more obvious by tattooing it on your forehead - you have an expensive device that's easily sellable if not in the US, than in overseas. That must be an invitation for mugging.

It's just common sense - get a backpack and try not to show it off - it takes only a bit of force and a few seconds to get it off you.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.