Every two years, Moz surveys the opinions of dozens of the world’s brightest search marketers and runs correlation studies to better understand the workings of search engine algorithms. They gather this data to gain insight into the factors that may help—or hurt—a website’s visibility in search engines. Note that these factors are not “proof” of what search engines use to rank websites, but simply show the characteristics of web pages that tend to rank higher.
This year, Moz surveyed over 120 leading search marketers who provided expert opinions on over 80 ranking factors.
Above they present the results of the 2013 Correlation Study. Select one of the 10 categories at the top of the chart to focus on those characteristics.