Google
updates like Panda, Penguin, Pigeon and Payday can mean major changes for search engine indexing and what's needed to perform well.
Pigeon is not a penalty - based
update like Panda or Penguin, both of which are aimed at scrubbing sites with low - quality content from search results pages.
Not exact matches
Yes Google has changed a lot things with the algorithm
updates like Penguin,
Panda and the Hummingbird.
As Google has become more serious about handing out penalties and making drastic algorithm changes
like the
Panda update and the Penguin
update that punish sites that publish poor content and use outdated and black hat SEO tactics, a number of websites have been affected.
It is a highly sophisticated and ever - changing model based on complex algorithms named after cute and cuddly things
like Penguins and
Pandas (two very recent and important
updates).