Not sure if this is the correct place for this or not.
http://www.lewrockwell.com/orig11/krolman1.1.1.html
My family & I got back from Disney (FL) last month and we did not have to go thru thr full body scan machines at either midway or orlando. However it appears that the machines will begin to see more use in more airports. As such the growing concern is
1) your image or that of your family being stored and/or uploaded to the web
2) the radiation dosage that you are exposed to each time you take a "picture"
3) the enchanced pat-down that occurs should you opt-out (for now) of the full body scan.
The link above goes to a letter someone wrote to disney regarding this issue and not knowing how to "get to" disney for a vacation.