Quick snip from Fortune‘s article ‘Why There’s No Escaping the Blog‘:
It all used to be so easy; the adage went “never pick a fight with anyone who buys ink by the barrel.” But now everyone can get ink for free, launch a diatribe, andâ€”if what they have to say is interesting to enough peopleâ€”expect web-enabled word of mouth to carry it around the world. Unlike earlier promises of self-publishing revolutions, the blog movement seems to be the real thing. A big reason for that is a tiny innovation called the permalink: a unique web address for each posting on every blog. Instead of linking to web pages, which can change, bloggers link to one another’s posts, which typically remain accessible indefinitely.