To Fly or Disappear?

Jon Udell likens the trade-off of Internet anonymity or capability to the hypothetical choice of being able to disappear or to fly.

The evidence presented from This American Life suggests that first people choose to disappear, but soon switch to the ability to fly.

I think in normal American society (where normal to me means the society I've been a part of for the past 42 years) I would also choose the ability to fly.

But what if I were living in a more tyrannical society? Like Iraq? I certainly would choose to disappear for any number of reasons.