RetailWire asked its BrainTrust panel of retailing experts what they thought of the potential of the Walmart Express format as well as its impact on the competitive landscape.

FORBES: Walmart Testing Express C-Store Concept

The retail giant, which rose to dominance with 185, 000-foot Supercenters, plans to open its first Walmart Express store in the second quarter of this year, though it won't say where.

WSJ: As Big Boxes Shrink, They Also Rethink

American Express is charging Walmart less than what debit card-issuing banks like Bank of America, JPMorgan Chase and Citi and Wells Fargo would charge Walmart via debit card swipe fees.

FORBES: Bove: Is Walmart's Banking Business Legal?