What do Wal-Mart's (NYSE:WMT) better-than-expected earnings mean for investors? What's in store for Costco (NASDAQ:COST), Target (NYSE:TGT), Volcom (NASDAQ:VLCM), and Zumiez (NASDAQ:ZUMZ)? And which retailers are on Motley Fool senior analyst Seth Jayson's radar? In this installment of "Fool Video," Online Managing Editor LouAnn DiCosmo talks with Seth about some retail winners and losers.