A Little Piece of the Google Algorithm – Revealed

http://www.seomoz.org/blogdetail.php?ID=1467
The comments and discussion are a must read for SEOs/Webmasters
GoogScore = (KW Usage Score * 0.3) + (Domain Strength * 0.25) + (Inbound Link Score * 0.25) + (User Data * 0.1) + (Content Quality Score * 0.1) + (Manual Boosts) – (Automated & Manual Penalties)

KW Usage Factors:

  • KW in title tag
  • KW in header tags
  • KW in document text
  • KW in internal links pointing to the page
  • KW in domain and/or URL

Domain Strength

  • Registration history
  • Domain age
  • Strength of links pointing to the domain
  • Topical neighborhood of domain based on inlinks & outlinks
  • Historical use & links pattern to domain

Inbound Link Score

  • Age of links
  • Quality of domains sending links
  • Quality of pages sending links
  • Anchor text of links
  • Link quantity/weight metric (Pagerank or a variation)
  • Subject matter of linking pages/sites

User Data

  • Historical CTR to page in SERPs
  • Time users spend on page
  • Search requests for URL/domain
  • Historical visits/use of URL/domain by users GG can monitor (toolbar, wifi, analytics, etc.)

Content Quality Score

  • Potentially given by hand for popular queries/pages
  • Provided by Google raters (remember Henk?)
  • Machine-algos for rating text quality/readability/etc

Obviously, this isn’t a perfect summation of the algorithm by any means, but I have a strong suspicion that if we were to see the exact algorithm in perfect form, we’d see that a lot of these factors are strongly reflected in the weighting.Read on…

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