Dreamwidth.org is sort of like blogger.com, Twitter, Wordpress.com, or any online blogging service, as opposed to blogging software, like Movable Type Open Source, Wordpress, or Ikiwiki.
Seems to be some good folks running the site and managing the community. They are requiring an invitation or a small fee to blog. Seems like a good idea, while free might be a way to spur growth, its often the wrong type of growth that gets generated. Free seems to be subject to abuse by blog spam and fake blogs.
Here’s a link to the site:
