The most enthusiastic advocates of currency boards--the people who believe that currency boards promote economic stability, full employment, rapid growth, and weight loss without dieting--tend to come from the Voodooland circuit: the same cluster of institutions, funded in the end by wealthy cranks, that has in the past pushed for supply-side economics and a restoration of the gold standard (see my old Slate pieces "Supply-Side Virus Strikes Again" and "The Gold Bug Variations"). But there are also more moderate, even sensible, people who believe that a currency board is appropriate in some circumstances.