Price Matching At Wal-Mart-?

I read this article BeCentsAble: Price Matching At Wal-Mart-Your Goldmine and am wondering if anyone else has ever price matched at Walmart? If so please let me know if this is easy or a hassle. Because shopping at one place with all of the deals listed in all of the dumb ads I leaf through sounds heavenly at this moment, especially as gas prices soar (seriously $4.00/gallon by summer? madness!) . So drop me a comment and let me know because if this is doable Walmart could be onto something!