I didn't read bubbleheads link, but the facts are:
The US government
is increasingly undermining the constitution, Im afraid they do have Containment Camps, though nobody know what they are actully for as there is no transparency on them (that in it self is rather worrying).
You have local malitias setup in 14 states. The dollar is becoming over inflated. (the US gov now borrows 42 cents of every dollar it spends.)
Many enconomists are predicting another financial crisis towards the end of 2012. (nothing to do with the Mayan calander mind you.
)
Sure we can all laugh a the foil hats, as they tend to go overboard, over exadurate and jump to conclusions. But unfortuntaly in this day and age, quite a few of these 'nutjob' concerns appear to be increasingly justified.