Newsweek is running an article on the 'alpha bloggers' and their impact/influence. Although very much focused on technology, its a model we'll surely see in other areas as well with blogs becoming more mainstream.
"The blogosphere is a tipping-point machine," says Searls, referring to Malcolm Gladwell's treatise on how ideas and trends can suddenly tilt from obscurity to ubiquity. A good idea gets amplified by the "echo chamber" of the blogosphere. It need not be the original thought of the blogger. In fact, as scientists from the HP Information Dynamics Lab wrote in a paper titled "Implicit Structure and the Dynamics of Blogspace," ideas move on the blogosphere like viruses; the alpha bloggers spread concepts like Typhoid Marys."