Google is rumoured that they have performed another updates to its Panda Algorithm. Several users claim noticed some changes to the search results. The researcher from Search Engine Land went ahead and contacted Google from some information, and this is the answer.
Google denied that they having performed any upgrades over the weekend to the Panda Algorithm. Many SEO Expert says, Google might not want to reveal the truth, some of they argued that the changes is obvious and might be due to refresh data or something similar.
Panda Algorithm is a good tools for Google to stop the spammy content. This product is introduced in 2011 and has done a great job in preventing some sites and blog that appearing up in the search ranking with spammy or duplicate content.