What the Blazes Is a Blog?  

'Blogs,' or Web logs, are the newest form of one-way and interactive online communication to hit the Internet. Most people would agree that a 'blog' is a regularly updated set of Web pages with a chronological set of thoughts and links. Starting around 1999, the blog movement has gained so much momentum that hundreds of thousands of Web logs and many different styles of blog now exist.

Archee, Raymond K. Intercom (2003). Articles>Web Design>Publishing>Blogging