MY COMMENTARY:
Interesting to see so many comments on this topic. Clearly we are all shoppers in this segment!
I have always been a big fan of Target. I am "one of those" who avoid Walmart if at all possible due to the feel of the place. Target provides good prices (even if not as low as Walmart) with nice ambiance and some really cool product via their focus on design. Unfortunately, they have drifted in the last few years and lost some of their message. It didn't change my enjoyment of the shopping experience there but clearly Walmart gained share as they stayed true to their low price message and dealt with much of their bad publicity.
I haven’t seen the new price-matching program in action, but I will assume the two test markets have shown strong results or they wouldn't be expanding the program. Target is known for execution, so I will assume they have the bugs worked out of dealing with the customer requests. I think the marketing message is right for the times and as long as they keep to their design ethos, it will prove to be a good move.