Give the paranoids their due. The overwhelming majority of the information the world spews out every day is digital -- photos from camera phones, PowerPoint presentations, government filings, billions and billions of e-mails, even digital phone messages. With a couple of clicks, every one of these items can be broadcast into the blogosphere by anyone with an Internet hookup -- or even a cell phone. If it's scandalous, a poisonous e-mail from a CEO, for example, or torture pictures from a prison camp, others link to it in a flash. And here's the killer: Blog posts linger on the Web forever.
Souce is this must read artciel on Business Week:
Blogs Will Change Your Business