09:09
pardeep
Your Google Algorithm Are Three Types:
1. Panda :Panda first launched on February 23, 2011. It was a big deal. The purpose of Panda was to try to show high-quality sites higher in search results and demote sites that may be of lower quality. This algorithm change was unnamed when it first came out, and many of us called it the "Farmer" update as it seemed to affect content farms. (Content farms are sites that aggregate information from many sources, often stealing that information from other sites, in order to create large numbers of pages with the sole purpose of ranking well in Google for many different keywords.) However, it affected a very large number of sites. The algorithm change was eventually officially named after one of its creators, Navneet Panda.
2.Penguin :The Penguin algorithm initially rolled out on April 24, 2012. The goal of Penguin is to reduce the trust that Google has in sites that have cheated by creating unnatural back links in order to gain an advantage in the Google results. While the primary focus of Penguin is on unnatural links, there can be other factors that can affect a site in the eyes of Penguin as well. Links, though, are known to be by far the most important thing to look at.
3.Hummingbird:Hummingbird is a completely different animal than Penguin or Panda. (Yeah, I know...that was a bad pun.) I will commonly get people emailing me telling me that Hummingbird destroyed their rankings. I would say that in almost every case that I have evaluated, this was not true. Google made their announcement about Hummingbird on September 26, 2013. However, at that time, they announced that Hummingbird had already been live for about a month. If the Hummingbird algorithm was truly responsible for catastrophic ranking fluctuations then we really should have seen an outcry from the SEO world of something drastic happening in August of 2013, and this did not happen. There did seem to be some type of fluctuation that happened around August 21 as reported here on Search Engine Round Table, but there were not many sites that reported huge ranking changes on that day.
If you think that Hummingbird affected you, it's not a bad idea to look at your traffic to see if you noticed a drop on October 4, 2013 which was actually a refresh of the Penguin algorithm. I believe that a lot of people who thought that they were affected by Hummingbird were actually affected by Penguin which happened just a week after Google made their announcement about Hummingbird.
There are some excellent articles on Hummingbird here and here. Hummingbird was a complete overhaul of the entire Google algorithm. As Danny Sullivan put it, if you consider the Google algorithm as an engine, Panda and Penguin are algorithm changes that were like putting a new part in the engine such as a filter or a fuel pump. But, Hummingbird wasn't just a new part; it was a completely new engine. That new engine still makes use of many of the old parts (such as Panda and Penguin) but a good amount of the engine is completely original.
The goal of the Hummingbird algorithm is for Google to better understand a user's query. Bill Slaw ski who writes about Google patents has a great example of this in his post here. He explains that when someone searches for "What is the best place to find and eat Chicago deep dish style pizza?", Hummingbird is able to discern that by "place" the user likely would be interested in results that show "restaurants". There is speculation that these changes were necessary in order for Google's voice search to be more effective. When we're typing a search query, we might type, "best Seattle SEO company" but when we're speaking a query (i.e. via Google Glass or via Google Now) we're more likely to say something like, "Which firm in Seattle offers the best SEO services?" The point of Hummingbird is to better understand what users mean when they have queries like this.
