Yes, it can do this but it usually requires some additional code. Here are the examples:
http://www.cyberseo.net/demo/tube-autoblog/ - autoblog tube demo. CyberSEO parses youtube RSS for keyword "funny" and generates the video posts with descriptions automatically.
http://www.cyberseo.net/demo/amazon-store-blog/ - this is an amazon shop demo. If you click on some item there (e.g. http://www.cyberseo.net/demo/amazon-store-blog/the-handmade-marketplace-how-to-sell-your-crafts-locally-globally-and-on-line/), you'll see it has a long description and a bigger picture - both are absent in the RSS feed.
The upcoming CyberSEO v.6 is able to pull full articles (full text, images and videos and everything else which is available in the original article) from the shortened feeds automatically w/o any additional code, which was required by CyberSEO v.5 for the examples above and available in the http://www.cyberseo.net/category/cyberseo/examples/ section.