An interesting article on Wal-Mart in MSNBC.Com and Forbes.Com covers the retailer’s expansion into non-American markets, and the role this part of their expansion plan is going to play in Wal-Mart’s continued growth. Like them or loathe them, Wal-Mart’s growth in non-U.S. markets is a sign of an increasing middle class in those countries, and that is a fundamentally good thing for the U.S. and them as well.