On this edition of ST, we offer another installment in our ongoing, twice-monthly Museum Confidential podcast series . Question: What is a museums supposed to do when it has WAY too much stuff? Whereas you yourself might take a few carloads of personal surplus to Goodwill, or maybe just set up a yard sale, museums don't have that luxury. Sometimes they end up building costly expansions just to contain the overflow. New York Times reporter Robin Pogrebin recently visited museums of various