The Google Penguin Update was
launched on April 24 , 2012.Google penguin update was designed to remove down
the website from index which were doing much more then white hat optimization
like :
Aggressive exact-match
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Overuse of exact-match domains
Low-quality article marketing
& blog spam
Keyword stuffing in
internal/outbound links
In simple words we can say that
Penguin Update deals in backlinks.
Google's chief resource for fighting
spam, Matt Cutts, has said that Penguin focused on penalizing sites that use
black-hat techniques.
Google has so far rolled out the
following Penguin updates:
Penguin — April 24,
2012
After
weeks of speculation about an "Over-optimization penalty", Google
finally rolled out the "Webspam Update", which was soon after dubbed
"Penguin." Penguin adjusted a number of spam factors, including
keyword stuffing, and impacted an estimated 3.1% of English queries.
Penguin 1.1 (#2) — May
25, 2012
Google
rolled out its first targeted data update after the "Penguin"
algorithm update. This confirmed that Penguin data was being processed outside
of the main search index, much like Panda data.
Penguin #3 — October
5, 2012
After
suggesting the next Penguin update would be major, Google released a minor
Penguin data update, impacting "0.3% of queries". Penguin update
numbering was rebooted, similar to Panda - this was the 3rd Penguin release.
Penguin 2.0 (#4) — May
22, 2013
After
months of speculation bordering on hype, the 4th Penguin update (dubbed
"2.0" by Google) arrived with only moderate impact. The exact nature
of the changes was unclear, but some evidence suggested that Penguin 2.0 was
more finely targeted to the page level.
Penguin 2.1 (#5) —
October 4, 2013
After
a 4-1/2 month gap, Google launched another Penguin update. Given the 2.1
designation, this was probably a data update (primarily) and not a major change
to the Penguin algorithm. The overall impact seemed to be moderate, although
some webmasters reported being hit hard.
