Search Engine Optimization is always changing. Thankfully, Rand Fishkin and SEOmoz perform a survey every two years. They poll up to 100 of the SEO industry’s top minds. In 2009 they had 72 experts participate. They recently published the results as the Search Engine Ranking Factors 2009 Survey.
This chart summarizes the five most important factors which they identified: Read what it means for your site, new or old...
This is a personal plug, plain and simple:
