Pandas are cute and they move slowly but they are potentially harmful if one does not respect them. Panda was first introduced in the search results in the US market. It had a major impact on content farms – slowly (ironically true to the nature of Pandas) it moved through Europe.
It is clear now that Google’s Panda algo adds additional algos specific to on page content; specifically interested in that the placement of content used by Google to determine keyword relevance; and specifically interested in content uniqueness.
It is also clear that Google will continue down this algo course.