The myth about Wal-Mart is that they have the lowest prices in town for low-income families. Actually, it has been shown by many reports that this is untrue. The end items (stuff at the end of the aisle) are very cheap and are good deals, hooking you into thinking that everything is cheap. However, the majority of stuf in the aisles is priced higher than at other stores. So, the prices are actually HIGHER!
Also, low-income American families suffer. Some argue that it provides jobs for communities. However, Wal-Mart controls manufacturers, forcing them to lower prices, which makes more and more manufacturers move overseas, to employ 8 year olds for a pennies for 100 hour work weeks. So, two factories will move out of a town, and a Wal-Mart will move in. This is horrible for America, and the world. Watch the Frontline special on Wal-Mart, and do some more independent resarch. Don't just take it from me, look into it for yourself.