Key learnings from the leak
Downplayed factors could be more significant
One of the things to have emerged is that previously downplayed ranking factors may be more significant than we thought. These include user clicks, browser activity, subdomains being considered separately and the age of a domain being taken into consideration.
User clicks
Google has always denied that click-centric user signals have been a ranking factor, but it’s remained a common misconception among searchers. The leaked documents suggest that click-through rates may contribute to SERPs after all.
Chrome browsing activity
Somewhat controversially, the leak seems to suggest that one of the website quality metrics Google uses is Chrome views. That means a site could attract more visits from users of other browsers but not receive the same credibility in terms of where it sits in the rankings.
Subdomains ranked separately
Subdomains can be a useful way to organize website content, but the leak hints that previous reassurances that they’re not ranked separately might not be true. Brands want all their marketing efforts to contribute to their SEO efforts.
Age of domains
It was thought that the age of a domain wasn’t factored into rankings, but the leaked documents suggest it might be. It’s important to build your authority with quality content over time and update any articles that are no longer relevant or have broken links.
Clicks and engagement
The leak seems to confirm that the monitoring of user behavior isn’t limited to main search queries. Google takes clicks and engagement before and after action into account when ranking keywords, boosting those that are deemed related as a result.