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Presentation on Google's Panda algo from SEMpdx monthly education event, held October 9 2012.

Presentation on Google's Panda algo from SEMpdx monthly education event, held October 9 2012.



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    Pandas Pandas Presentation Transcript

    • Google’s Panda AlgorithmMake that big bad bear chew bamboo foryou. Michael Cottam me@michaelcottam.com www.michaelcottam.com @Michael512 9 October 2012
    • What is Panda?• Not a bear.• Meet Navneet Panda, a Google Engineer
    • We have his resume:• Coincidence? I think not…
    • Seriously, why “Panda”? • Danny Sullivan called the algo change “Farmer” – Targeting content “farms” (eHow, article factories, etc.) • Sorry Danny, that’s BORING • Navneet Panda was a key engineer on that team • He’s a machine learning guy
    • Panda is:• A new ranking factor – NOT a new algorithm on its own – NOT a manual penalty• Overall idea: use an estimation of “quality” of the content as a ranking factor• So…does it penalize or boost sites?
    • Dissection of the Panda • Human quality raters rate pages • Machine learning: what’s common between pages that suck? – Or that rock? • Tweak the algo, and see if the new results have better sites in the top spots – Feb 23 2011 Panda 1.0 - affected 12% of search results
    • 2 Years of algo changes: it’s not all Panda • Penguin (of course) • Reduction in impact of EMDs • Venice (“local universal” results) • # of results from the same domain • Emanuel Update: penalty for DMCA take- downs • 7-result SERPs • Over 500 little updates to the algo/year • Knowledge Graph • Parked domains • Search + Your World • Freshness update • Rel=next, rel=prev
    • • It’s definitely NOT: What – – Content farms Thin affiliates is “quality”? – Scraper sites – Sites with excessive ads • Especially above-the-fold – Made-For-Adsense – Thin price-comparison sites
    • Grrrr….make Panda angry• http://www.fixya.com/support/t6451689-switch_
    • Mmmm…make Panda happy Quality, measured by:• Low bounce rate• Dwell time on site• Original content (inc. images!)• LOTS of content • Rich content (maps, video, pics) • Trust signals • Expert/authority signals
    • Google Dance/Panda Dance• The Bear Dances Slowly• Each page gets a quality “score” • Calculations to come up with scores for all pages in the Google index takes WEEKS • Algo hasn’t changed much, but… • “Data refresh” comes every month or two
    • Make that furball chew FOR you • Rich content – Maps, BIG photos, videos, lots of original text • Consolidate similar pages • Minimize ad real estate above the fold • Use original images Examples: • Bora bora helicopter tours • Corvair at Keels • BMW M1 Monterey
    • References• Navneet Panda’s resume: http://www.shmula.com/wp-content/uploads/2011/05/navneet-panda-go• SEOmoz chart of Google algo changes: http://www.seomoz.org/google-algorithm-change• Matt Cutts video: “quality raters don’t affect the algo directly”: http://searchengineland.com/video-google-speaks-about-search-quality• Google’s public declaration of what makes quality in a page: http://googlewebmastercentral.blogspot.com/2011/05/more- guidance-on-building-high-quality.html• Google’s reverse image search: http://images.google.com/imghp?hl=en• Great reference on Panda from .NET Magazine: http://www.netmagazine.com/features/10-things-you-need- know-about-google-panda-and-penguin• List of specific Google algo changes in August/September: http://searchengineland.com/googles-august-september- updates-panda-knowledge-graph-page-quality-safesearch- 135397• Our “gangnam style” video: http://www.youtube.com/watch? v=_bKs_R1AxME