PORTO ALEGRE, Brazil -- Bankers and billionaires, their hangers-on and friends in government now have some serious competition when they gather -- as they did this past weekend in New York City -- for their annual World Economic Forum. The shadow forum down South is less exclusive -- nobody pays $25,000 to get in to the World Social Forum, and you don't need an invitation. But the 70,000 people who flocked to this waterfront Brazilian city of 1.2 million from every corner of the globe were greeted by an appealing theme: "Another World is Possible."