"Besides introducing valuable new sources of information to readers, these sites are also forcing their proprietors to act like journalists: choosing stories, judging the credibility of sources, writing headlines, taking pictures, developing prose styles, dealing with readers, building audience, weighing libel considerations, and occasionally conducting informed investigations on their own," writes Matt Welch. "Thousands of amateurs are learning how we do our work, becoming in the process more sophisticated readers and sharper critics. For lazy columnists and defensive gatekeepers, it can seem as if the hounds from a mediocre hell have been unleashed. But for curious professionals, it is a marvelous opportunity and entertaining spectacle; they discover what the audience finds important and encounter specialists who can rip apart the work of many a generalist. More than just A.J. Liebling-style press criticism, journalists finally have something approaching real peer review, in all its brutality. If they truly value the scientific method, they should rejoice. Blogs can bring a collective intelligence to bear on a question."