Password protecting Blackberry

I am astounded how many Blackberry's I see on the streets and among colleagues. But here's a VERY cautionary tale from David Farrar, of Kiwiblog fame. First, David left his Blackberry on a bus, and it was never handed in. When he reported that to the Police, they asked if he had password protected it. No. So when David bought a new Blackberry, he made sure to password protect this one. That's when the trouble started. (Reader caution: some strong language.)