Wal-Mart is not just another company. It is the largest corporation in the world and everything it does sends shudders through the economy, affecting market behavior and the practices of its competitors. A year ago, I told you about Wal-Mart's censorship. I told you about the company's forcing its employees to work unpaid overtime. My column mentioned Wal-Mart's low wages and alleged use of pressure tactics to prevent the formation of labor unions. I told you about the accusations of sex discrimination and I urged you to shop at more socially responsible businesses. In the year since, the bad news about Wal-Mart has continued to rain down. Details have emerged of Wal-Mart workers routinely laboring through their breaks in violation of state labor laws. An internal audit found numerous violations of child labor laws that limit how many hours minors can work and when, The New York Times reported.