Short for weblog - A personal website that acts as a log or diary. Blogs comprise frequent publication of personal thoughts and Web links usually maintained in chronological order. Most blogs also invite and display public comments about each entry.

A blog is generally very personal in nature, often relating what is happening in a person's life and what is happening on the Web. Lately blogs have become a discussion area and an extension of political speech in America. The growing number of blogs devoted primarily to discussions of political issues, are sometimes referred to collectively as as "the blogasphere".

People maintained blogs long before the term was coined, but the trend gained momentum with the introduction of automated publishing standards such as RSS and systems based on them, most notably Blogger at blogger.com. Thousands of people use services such as Blogger to simplify and accelerate their blog-publishing process.