Wal-Mart (WMT +0.4%) beat forecasts, but disappointing same-store sales raise a critical...

|By:, SA News Editor

Wal-Mart (WMT +0.4%) beat forecasts, but disappointing same-store sales raise a critical question, Barron's Bob O'Brien says: "Can it keep the base of new customers it drew when the economy first hit the consumer?" In other words, how loyal will the marginal customer - who turned to Wal-Mart as a last resort when the economy started to dive - prove to be, now that economic growth has resumed?