When the national press devoured a new union-sponsored poll released last week by uber-pollster John Zogby claiming that a majority of Americans believe that "Wal-Mart is bad for America," not reported were serious ethical issues which call into question the integrity of the much-ballyhooed survey. Perhaps because Mr. Zogby has such a sterling reputation -- which has enabled him to snare contracts with several top media outlets, including Reuters, NBC, and the Wall Street Journal -- his findings were reported largely unchallenged. But what no journalist would have known without digging is that Mr. Zogby cannot be considered an objective...