Wal-Mart (WMT 1.32%) is expanding an online shopping program that allows in-store pickup at lockers. This comes after much success by Amazon.com (AMZN -1.64%) offering two-day shipping with its Prime service and shows some willingness by the retail industry to adjust to consumer behavior. Is this a one-off move or a trend other retailers will follow? The Fool's Erin Miller sat down with Travis Hoium to find out.
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