This document defines and describes blogs. It states that a blog is a website that functions like an online journal where individuals post commentary and opinions on particular topics. Blogs typically display posts in reverse chronological order and allow comments. Common types of blogs include personal blogs for diaries, corporate blogs for business, and topic-specific blogs. The document also provides tips for blogging, describes the basic components of a blog post, lists free blogging platforms, and discusses advantages such as self-expression, networking, and marketing.