The folks at SearchMetrics have released their SEO ranking factors for 2013. This is their ranking correlation study they worked on for the past 3-months, right after the second-generation Penguin update was pushed out by Google. Want to understand everything that was in it? They’ve got an infographic for that (click to enlarge):
The key takeaways from their study included:
There’s been some criticism around this study on social networks, but like with any ranking correlation study, there are always critiques, and there should be. You can download the study over here.