This is an example of a Confluence wiki set up specifically to be a blog (an online journal). The Confluence wiki supports blogging via the Add News link and News tab. You can also bring blog entries into any page with the blog-posts tag.
{blog-posts:5}
In addition, Confluence supports RSS feeds, so you can bring in RSS content from other websites and display it using the rss tag.
{rss:url=http://host.com/rss.xml|max=5}
Here's an example of RSS content.
Could not access the content at the URL because it is not from an allowed source.
http://www.realclimate.org/index.php/feed/atom/
You may contact your site administrator and request that this URL be added to the list of allowed sources.