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‘Panda’ updates to the Google algorithm have been introduced from March 2011 to place greater emphasis on a variety of user approval signals and decrease the benefits of artificial backlinking.
Panda, named after the Google engineer who developed it, incorporates machine learning. Essentially, the program learns on the job figuring out and fine-tuning the weight of user signals indicating approval or disapproval. This results in on-going re-arrangement of positioning of webpages on Google’s results pages.
Panda examines a number of user signals including time spent on the website, ‘bounce rate’ (the number of visitors who fail to click on internal website links) and probably returnees. Even the consequences of the information displayed on results pages are analysed. Positioning on results pages will be changed according to click through rate.

How should SEOs react to Google Panda Update?
Panda sets out to improve positioning of top quality websites’
webpages. Greater emphasis will be placed on excellent content,
outstanding presentation and attention to detail. There will be
even less potential benefit to those who participate in black
hat strategies such as backlinking campaigns.
SEOs who have advocated excellent quality as
the means to success should be encouraged. Seeking natural
backlinks to increase PageRank will continue to be an essential
part of SEO but this should be with white hat techniques, such
as link-baiting, as opposed to black hat techniques such as
automated backlinking campaigns.
The objective of SEO is to maximise the number of targeted new
visitors to a website. The starting point is keyword research
which involves producing a list of potential keywords that
targeted visitors would use to find the information a website
provides. Niche keywords will have the largest number of
targeted visitors where there is a reasonable possibility of top
page positioning on search engines and in particular on Google.
Niche keywords are found by determining their HPR-KD and knowing
the HomePage PageRank of the website.
Matt Cutts, who heads the Google anti-spam unit, refers to a
‘Katamari’ philosophy for website authority development based on
the Japanese game which starts with a small object and which
gradually rolls up ever larger ones.
In terms of keyword difficulty and developing webpages around
appropriate niche keywords, the objective remains to start
slowly with ‘low hanging fruit’ keywords and gradually increase
HomePage PageRank by natural means so that more lucrative
keywords come into play.
SEO should be seen as an ever broadening horizon for each
website as its authority grows.
It is vital that webpages, and in particular the HomePage, are
optimised for the limited number of niche keywords that are in
range. This will enable the website to be found and for natural
backlinks to be accumulated. Gradually, the HomePage PageRank
will increase and more desirable keywords will come into range.
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