Say what you want about the assorted professionals, philosophers, bums, radicals, students and wage slaves comprising Occupy Wall Street, but they've managed to pull off the impossible. In the center of one of the world's most expensive cities, a place where the average tourist family of four spends roughly $3,500 per visit, they've accomplished something even the guidebooks wouldn't dare promise: New York living on less than $10 a day.

Lexi Ricciardelli, a protester from Central New Jersey, says she packed light for her first...