The collection of all bloggers, blog sites, blog readers and blog text.
Wordspy.com

A person who blogs.

Short for Web log, a blog is a Web page that serves as a publicly accessible personal journal for an individual or as a communication tool for businesses. Regularly updated, blogs often reflect the personality of the author.

Postings are arranged in reverse chronological order - meaning the most recently added article appears first, followed by the second most recently added article and so on.