New Edition of the Ranking Factors for 2011

Welcome to the 2011 edition of the Search Engine Ranking Factors. For the past 6 years, SEOmoz has compiled the aggregated opinions of dozens of the world's best and brightest search marketers into this biennial, ranking factors document. This year, for the first time, we're presenting a second form of data - correlation-based analysis - alongside the opinions of our 132-person panel.

Over the pages of this document, you'll see segmentation of the search ranking algorithm into various components like "page-specific, link-level features," or "domain-level, keyword-agnostic features." These segments represent the different elements illustrated on the pie chart to the right. In each segment, you'll see three types of charts

http://www.seomoz.org/article/search-ranking-factors#overview