Google Panda
Google Panda is a change to Google's search results ranking algorithm that was first released in February 2011. The change aimed to lower the rank of "low-quality sites" or "thin sites", and return higher-quality sites near the top of the search results. CNET reported a surge in the rankings of news websites and social networking sites, and a drop in rankings for sites containing large amounts of advertising. This change reportedly affected the rankings of almost 12 percent of all search results. Soon after the Panda rollout, many websites, including Google's webmaster forum, became filled with complaints of scrapers/copyright infringers getting better rankings than sites with original content. At one point, Google publicly asked for data points to help detect scrapers better. Google's Panda has received several updates since the original rollout in February 2011, and the effect went global in April 2011. To help affected publishers, Google provided an advisory on its blog, thus giving some direction for self-evaluation of a website's quality. Google has provided a list of 23 bullet points on its blog answering the question of "What counts as a high-quality site?" that is supposed to help webmasters "step into Google's mindset".
Ranking factors
Google Panda is a filter that prevents low quality sites and/or pages from ranking well in the search engine results page. The filter's threshold is influenced by Google Quality Raters. Quality Raters answer questions such as "would I trust this site with my credit card?" so that Google can distinguish the difference between high and low quality sites.
The Google Panda patent (patent 8,682,892), filed on September 28, 2012, was granted on March 25, 2014. The patent states that Google Panda creates a ratio with a site's inbound links and reference queries, search queries for the site's brand. That ratio is then used to create a sitewide modification factor. The sitewide modification factor is then used to create a modification factor for a page based upon a search query. If the page fails to meet a certain threshold, the modification factor is applied and, therefore, the page would rank lower in the search engine results page.
Google Panda affects the ranking of an entire site or a specific section rather than just the individual pages on a site.
In March 2012, Google updated Panda.
Google says it only takes a few pages of poor quality or duplicated content to hold down traffic on an otherwise solid site, and recommends such pages be removed, blocked from being indexed by the search engine, or rewritten. However, Matt Cutts, head of webspam at Google, warns that rewriting duplicate content so that it is original may not be enough to recover from Panda—the rewrites must be of sufficiently high quality, as such content brings "additional value" to the web. Content that is general, non-specific, and not substantially different from what is already out there should not be expected to rank well: "Those other sites are not bringing additional value. While they’re not duplicates they bring nothing new to the table."
Updates
For the first two years, Google Panda updates were rolled out about once a month but Google stated in March 2013 that future updates would be integrated into the algorithm and, therefore, less noticeable and continuous.
Google released a "slow rollout" of Panda 4.1 over the week of September 21, 2014.
Google has announced that the latest version of its Panda Update - a filter designed to penalize “thin” or poor content from ranking well - has been released.
Google said in a post on Google+ that a “slow rollout” began earlier this week and will continue into next week, before being complete. Google said that depending on location, about 3%-to-5% of search queries will be affected.
Anything different about this latest release? Google says it’s supposed to be more precise and will allow more high-quality small and medium-sized sites to rank better. From the post:
Based on user (and webmaster!) feedback, we’ve been able to discover a few more signals to help Panda identify low-quality content more precisely. This results in a greater diversity of high-quality small- and medium-sized sites ranking higher, which is nice.
New Chance For Some; New Penalty For Others
The rollout means anyone who was penalized by Panda in the last update has a chance to emerge, if they made the right changes. So if you were hit by Panda, made alterations to your site, you’ll know by the end of next week if those were good enough, if you see an increase in traffic.
The rollout also means that new sites not previously hit by Panda might get impacted. If you’ve seen a sudden traffic drop from Google this week, or note one in the coming days, then this latest Panda Update is likely to blame.
About That Number
Why are we calling it Panda 4.1? Well, Google itself called the last one Panda 4.0 and deemed it a major update. This isn’t as big of a change, so we’re going with Panda 4.1.
We actually prefer to number these updates in the order that they’ve happened, because trying to determine if something is a “major” or “minor” Panda Update is imprecise and lead to numbering absurdities like having a Panda 3.92 Update.
But since Google called the last one Panda 4.0, we went with that name — and we’ll continue on with the old-fashioned numbering system unless it gets absurd again.
For the record, here’s the list of confirmed Panda Updates, with some of the major changes called out with their AKA (also known as) names:
Panda Update 1, AKA
Panda 1.0, Feb. 24, 2011 (11.8% of queries; announced; English in US only)
Panda Update 2, AKA
Panda 2.0, April 11, 2011 (2% of queries; announced; rolled out in English internationally)
Panda Update 3, May 10, 2011 (no change given; confirmed, not announced)
Panda Update 4, June 16, 2011 (no change given; confirmed, not announced)
Panda Update 5, July 23, 2011 (no change given; confirmed, not announced)
Panda Update 6, Aug. 12, 2011 (6-9% of queries in many non-English languages; announced)
Panda Update 7, Sept. 28, 2011 (no change given; confirmed, not announced)
Panda Update 8 AKA
Panda 3.0, Oct. 19, 2011 (about 2% of queries; belatedly confirmed)
Panda Update 9, Nov. 18, 2011: (less than 1% of queries; announced)
Panda Update 10, Jan. 18, 2012 (no change given; confirmed, not announced)
Panda Update 11, Feb. 27, 2012 (no change given; announced)
Panda Update 12, March 23, 2012 (about 1.6% of queries impacted; announced)
Panda Update 13, April 19, 2012 (no change given; belatedly revealed)
Panda Update 14, April 27, 2012: (no change given; confirmed; first update within days of another)
Panda Update 15, June 9, 2012: (1% of queries; belatedly announced)
Panda Update 16, June 25, 2012: (about 1% of queries; announced)
Panda Update 17, July 24, 2012:(about 1% of queries; announced)
Panda Update 18, Aug. 20, 2012: (about 1% of queries; belatedly announced)
Panda Update 19, Sept. 18, 2012: (less than 0.7% of queries; announced)
Panda Update 20 , Sept. 27, 2012 (2.4% English queries, impacted, belatedly announced
Panda Update 21, Nov. 5, 2012 (1.1% of English-language queries in US; 0.4% worldwide; confirmed, not announced)
Panda Update 22, Nov. 21, 2012 (0.8% of English queries were affected; confirmed, not announced)
Panda Update 23, Dec. 21, 2012 (1.3% of English queries were affected; confirmed, announced)
Panda Update 24, Jan. 22, 2013 (1.2% of English queries were affected; confirmed, announced)
Panda Update 25, March 15, 2013 (confirmed as coming; not confirmed as having happened)
Panda Update 26 AKA
Panda 4.0, May 20, 2014 (7.5% of English queries were affected; confirmed, announced)
Panda Update 27 AKA
Panda 4.1, Sept. 25, 2014 (3-5% of queries were affected; confirmed, announced)
The latest update comes four months after the last, which suggests that this might be a new quarterly cycle that we’re on. Panda had been updated on a roughly monthly basis during 2012. In 2013, most of the year saw no update at all.
Google Panda is a change to Google's search results ranking algorithm that was first released in February 2011. The change aimed to lower the rank of "low-quality sites" or "thin sites", and return higher-quality sites near the top of the search results. CNET reported a surge in the rankings of news websites and social networking sites, and a drop in rankings for sites containing large amounts of advertising. This change reportedly affected the rankings of almost 12 percent of all search results. Soon after the Panda rollout, many websites, including Google's webmaster forum, became filled with complaints of scrapers/copyright infringers getting better rankings than sites with original content. At one point, Google publicly asked for data points to help detect scrapers better. Google's Panda has received several updates since the original rollout in February 2011, and the effect went global in April 2011. To help affected publishers, Google provided an advisory on its blog, thus giving some direction for self-evaluation of a website's quality. Google has provided a list of 23 bullet points on its blog answering the question of "What counts as a high-quality site?" that is supposed to help webmasters "step into Google's mindset".
Ranking factors
Google Panda is a filter that prevents low quality sites and/or pages from ranking well in the search engine results page. The filter's threshold is influenced by Google Quality Raters. Quality Raters answer questions such as "would I trust this site with my credit card?" so that Google can distinguish the difference between high and low quality sites.
The Google Panda patent (patent 8,682,892), filed on September 28, 2012, was granted on March 25, 2014. The patent states that Google Panda creates a ratio with a site's inbound links and reference queries, search queries for the site's brand. That ratio is then used to create a sitewide modification factor. The sitewide modification factor is then used to create a modification factor for a page based upon a search query. If the page fails to meet a certain threshold, the modification factor is applied and, therefore, the page would rank lower in the search engine results page.
Google Panda affects the ranking of an entire site or a specific section rather than just the individual pages on a site.
In March 2012, Google updated Panda.
Google says it only takes a few pages of poor quality or duplicated content to hold down traffic on an otherwise solid site, and recommends such pages be removed, blocked from being indexed by the search engine, or rewritten. However, Matt Cutts, head of webspam at Google, warns that rewriting duplicate content so that it is original may not be enough to recover from Panda—the rewrites must be of sufficiently high quality, as such content brings "additional value" to the web. Content that is general, non-specific, and not substantially different from what is already out there should not be expected to rank well: "Those other sites are not bringing additional value. While they’re not duplicates they bring nothing new to the table."
Updates
For the first two years, Google Panda updates were rolled out about once a month but Google stated in March 2013 that future updates would be integrated into the algorithm and, therefore, less noticeable and continuous.
Google released a "slow rollout" of Panda 4.1 over the week of September 21, 2014.
Panda 4.1 — Google’s 27th Panda Update — Is Rolling OutDanny Sullivan on September 25, 2014 at 7:08 pm
Google has announced that the latest version of its Panda Update - a filter designed to penalize “thin” or poor content from ranking well - has been released.
Google said in a post on Google+ that a “slow rollout” began earlier this week and will continue into next week, before being complete. Google said that depending on location, about 3%-to-5% of search queries will be affected.
Anything different about this latest release? Google says it’s supposed to be more precise and will allow more high-quality small and medium-sized sites to rank better. From the post:
Based on user (and webmaster!) feedback, we’ve been able to discover a few more signals to help Panda identify low-quality content more precisely. This results in a greater diversity of high-quality small- and medium-sized sites ranking higher, which is nice.
New Chance For Some; New Penalty For Others
The rollout means anyone who was penalized by Panda in the last update has a chance to emerge, if they made the right changes. So if you were hit by Panda, made alterations to your site, you’ll know by the end of next week if those were good enough, if you see an increase in traffic.
The rollout also means that new sites not previously hit by Panda might get impacted. If you’ve seen a sudden traffic drop from Google this week, or note one in the coming days, then this latest Panda Update is likely to blame.
About That Number
Why are we calling it Panda 4.1? Well, Google itself called the last one Panda 4.0 and deemed it a major update. This isn’t as big of a change, so we’re going with Panda 4.1.
We actually prefer to number these updates in the order that they’ve happened, because trying to determine if something is a “major” or “minor” Panda Update is imprecise and lead to numbering absurdities like having a Panda 3.92 Update.
But since Google called the last one Panda 4.0, we went with that name — and we’ll continue on with the old-fashioned numbering system unless it gets absurd again.
For the record, here’s the list of confirmed Panda Updates, with some of the major changes called out with their AKA (also known as) names:
Panda Update 1, AKA
Panda 1.0, Feb. 24, 2011 (11.8% of queries; announced; English in US only)
Panda Update 2, AKA
Panda 2.0, April 11, 2011 (2% of queries; announced; rolled out in English internationally)
Panda Update 3, May 10, 2011 (no change given; confirmed, not announced)
Panda Update 4, June 16, 2011 (no change given; confirmed, not announced)
Panda Update 5, July 23, 2011 (no change given; confirmed, not announced)
Panda Update 6, Aug. 12, 2011 (6-9% of queries in many non-English languages; announced)
Panda Update 7, Sept. 28, 2011 (no change given; confirmed, not announced)
Panda Update 8 AKA
Panda 3.0, Oct. 19, 2011 (about 2% of queries; belatedly confirmed)
Panda Update 9, Nov. 18, 2011: (less than 1% of queries; announced)
Panda Update 10, Jan. 18, 2012 (no change given; confirmed, not announced)
Panda Update 11, Feb. 27, 2012 (no change given; announced)
Panda Update 12, March 23, 2012 (about 1.6% of queries impacted; announced)
Panda Update 13, April 19, 2012 (no change given; belatedly revealed)
Panda Update 14, April 27, 2012: (no change given; confirmed; first update within days of another)
Panda Update 15, June 9, 2012: (1% of queries; belatedly announced)
Panda Update 16, June 25, 2012: (about 1% of queries; announced)
Panda Update 17, July 24, 2012:(about 1% of queries; announced)
Panda Update 18, Aug. 20, 2012: (about 1% of queries; belatedly announced)
Panda Update 19, Sept. 18, 2012: (less than 0.7% of queries; announced)
Panda Update 20 , Sept. 27, 2012 (2.4% English queries, impacted, belatedly announced
Panda Update 21, Nov. 5, 2012 (1.1% of English-language queries in US; 0.4% worldwide; confirmed, not announced)
Panda Update 22, Nov. 21, 2012 (0.8% of English queries were affected; confirmed, not announced)
Panda Update 23, Dec. 21, 2012 (1.3% of English queries were affected; confirmed, announced)
Panda Update 24, Jan. 22, 2013 (1.2% of English queries were affected; confirmed, announced)
Panda Update 25, March 15, 2013 (confirmed as coming; not confirmed as having happened)
Panda Update 26 AKA
Panda 4.0, May 20, 2014 (7.5% of English queries were affected; confirmed, announced)
Panda Update 27 AKA
Panda 4.1, Sept. 25, 2014 (3-5% of queries were affected; confirmed, announced)
The latest update comes four months after the last, which suggests that this might be a new quarterly cycle that we’re on. Panda had been updated on a roughly monthly basis during 2012. In 2013, most of the year saw no update at all.
