Weblogs open a discussion.

Whether you're a warblogger who works by day as a professional journalist or you're a teenage high school student worried about your final exams, you do the same thing: you use your blog to link to your friends and rivals and comment on what they're doing. Blog posts are short, informal, sometimes controversial, and sometimes deeply personal, no matter what topic they approach. They can be characterized by their conversational tone and unlike a more formal essay or speech, a blog post is often an opening to a discussion, rather than a full-fledged argument already arrived at.

Quote: O'Reilly Network: Meg Hourihan on Blogs