Blog
A blog is a user-generated website where entries are made in journal style and displayed in a reverse chronological order.
The Wikipedia has an excellent overview article at http://en.wikipedia.org/wiki/Blog
The P2P Foundation's blog is at http://blog.p2pfoundation.net
We monitor developments in the Blogosphere, the interconnected universe of blogs, through a delicious tag at http://del.icio.us/mbauwens/Blogosphere