What is a blog?

I am often asked by my friends. Nancy was the most recent to ask. My typical daisy-chain of blog exploration led me to this definition:

A frequent, chronological publication of personal thoughts and Web links. A blog is often a mixture of what is happening in a person's life and what is happening on the Web, a kind of hybrid diary/guide site, although there are as many unique types of blogs as there are people.
From NetLingo The Internet Dictionary.

Couldn't have said it better myself!