Avinash Kaushik - world leader in web business optimisation
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Main SEO Ranking Factors Reference
Published by SEOMoz in April, 2007. If you didn't catch it at the time it is a great top-level reference of the relative importance of SEO factors:
We reference the SEOMoz list and provide more details on each ranking factor in our detailed reference - the E-consultancy SEO Best Practice Guide
When training in SEO, these are the main factors are refer to (with score out of 5):
On page optimization ranking factor importance
- title attribute of document = 4.9/5
- Meta name description = 2/5
- Meta name keywords = 1/5
- Keyword frequency and density = 3.7/5
- Keyword in headings - h1 = 3.1, h2 = 2.8
- Keyword in document name = 2.8
Off-page optimisation ranking factor importance
- More backlinks (higher PageRank)= 4/5
- Page assessed as a hub = 3.5/5
- Page assessed as an authority = 3.5/5
- Link anchor text contains keyword = 4.4/5
- Link velocity (rate at which changes) = 3.5/5
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