What is a blog, anyway?

In a nutshell, a blog is:
  • A (web)log of chronologically ordered posts that usually are available to the public (though many blogs - especially personal journals and class blogs - are password-protected and private)
  • Traditionally text-based, though also may include (or be solely based on) images, video, other multimedia.
  • Usually available via subscription, via email (notification of new posts comes to your inbox) or RSS feed. Subscription increases convenience to the reader: you don't have to visit sites of interest in search of something new. New content comes to you.
  • Generally focused on a specific topic area (e.g., e-learning, photography, dog training)
  • A social medium. Unless you set up otherwise, posts allow (and hopefully invite) comments and interaction beyond the initial entry.

Some types of uses/focus areas: