The dates shown for the blog posts are incorrect. They all say September 20, 2009, when in fact the underlying dates go back to 2008. It looks more like the time at which it was imported. It should be displaying the pubDate from the feeds.
Aggregators are fun. Here's one I made for Drupal:<p><a href="http://drupalfire.com/" rel="nofollow">http://drupalfire.com/</a><p>I've found that people visit the site once, subscribe to the RSS, and don't come back.