Yes, it's kind of confusing. That's why I was asking it in a poll. It took me 6 months to finally figure it out what is happening with that program. If you can figure the site out within 6 months, you are well ahead of me.
The site is using Drupal, which is one of the open source projects. The program is often used by the civil advocate sites. One example is
http://www.spreadfirefox.com/ Do you think their site is confusing? If not perhaps we can borrow some ideas from them.
It can include many contents, e.g. blogs, story, books, forum and others. The content is just a single post, tagged by keywords, and all posts are promoted to the front page automatically. But it's also classified by the tags on the left hand side. So you can browse by date, (with the calendar) or by tags (using the left navigation). You can track your own post by clicking on your own profile, and select the "track" tab. You can track anyone's post by clicking on their track tag. It'll take a while to get use to, but once your get used to it, you'll find it may be the best way to organize contents.
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