Google Panda and its updates

GOOGLE PANDA : Google Panda is a change to the Google's search results ranking algorithm that was first released in February 2011. The change aimed to lower the rank of "low-quality sites", and return higher-quality sites near the top of the search results. This change reportedly affected the rankings of almost 12 percent of all search results.
Past Panda Updates:
  • Panda 3.4 on March 23rd
  • Panda 3.3 on about February 26th
  • Panda 3.2 on about January 15th
  • Panda 3.1 on November 18th
  • Panda 2.5.3 on October 19/20th
  • Panda 2.5.2 on October 13th
  • Panda 2.5.1 on October 9th
  • Panda 2.5 on September 28th
  • Panda 2.4 in August
  • Panda 2.3 on around July 22nd.
  • Panda 2.2 on June 18th or so.
  • Panda 2.1 on May 9th or so.
  • Panda 2.0 on April 11th or so.
  • Panda 1.1 on February 24th
  • Panda 1.0 on February 11th

Panda 1.0 : Strongly aimed at scraper sites, i.e scraper sites with high page ranks. Mostly as of the users known that, In many forums many reminded that the update was rolled by the adsense view.

Panda 1.1 : Targeted Low quality sites i.e low link building sites..

Panda 2.0 : In this version panda update is rolled to worlwide.

Panda 2.1 : Just a deeper version for the above updates.

Panda 2.2 : Not any changes known, but many users say that this change effected the site URL names, i.e site url direct with keywords got high traffic.
Panda 2.3 : Google says : This update incorporates some new signals that help differentiate between higher - and lower-quality sites. As a result, some sites are ranking higher after this most recent update.

Panda 2.4 : In this Google says : we’re continuing that effort by rolling out our algorithmic search improvements in different languages... this change impacts typically 6-9% of queries to a degree that a user might notice. This is distinctly lower than the initial launch of Panda, which affected almost 12% of English queries to a noticeable amount.

Panda 2.5 : Says that :
We’re continuing to iterate on our Panda algorithm as part of our commitment to returning high-quality sites to Google users. This most recent update is one of the roughly 500 changes we make to our ranking algorithms each year. "

Panda 2.5.1 : Not mentioned the changes rolled out, but only some of the users recovered from the mass traffic loss during the above update.

Panda 2.5.2 & Panda 2.5.3 : A very minor updates that was noticed by the users,even the changes were not announced by the Google. But the users say that nearly 100-200 keywords were backdropped and lost the traffic.

Panda 3.1 : The main effect that changes the search results, In this update has made to find more high quality sites in search results. It is said that the blocked sites were regarding the reference of Personalised chrome blocklist extension (

Panda 3.2 : A minor update for the before version which effects <1% of search results change.

Panda 3.3 : Google says : "This launch refreshes data in the Panda system, making it more accurate and more sensitive to recent changes on the web. "
Refreshing is to say that the algorithm is applied again, so that the quality sites get improved where as the remaing may effect a lot.

Panda 3.4 : Another refresh rolled out which effects nearly 1.6% of the search results.

Note: Google has not made any versions named as updates such as 1.0,1.2 and so.. These versions were named by the webmasters as were the changes rolled out. In particular versions were named out in