From the original article: "Understanding the way that search engines like Google and Bing crawl your sites for duplicate content is not always easy to follow.
Google Panda evaluates the quantity and quality of the content housed on your site and assigns a value to your website or section of your website.
It’s important to note that just because you’ve updated your content, changes will not necessarily be reflected by Google until they update your Panda rank."
Informative. Useful. 8/10