Who is a journalist? That is the question that Jeff Gannon, alias James Guckert, asked in his own defense during a National Press Club panel last week. The club sponsored the discussion to illuminate the differences between legitimate journalists and bloggers -- or imposters. Gannon and a couple of bloggers were on the panel. Gannon made news recently after some liberal bloggers began investigating him when he asked President George W. Bush a question that had as its premise the assertion that congressional Democrats were "divorced from reality." Bush comes to his rare news conferences armed with a list of...