Ranking measures

Alexa traffic rank
Alexa Internet ranks websites based on a combined measure of page views and unique site users. Alexa creates a list of "top websites" based on this data time-averaged over three-month periods.
Linking root domains
The number of linking root domains is a measure of how many external sites link to the website in question.
Google Display Network Ad Planner
The Google Display Network Ad Planner measures the number of unique visitors, for use by Google's advertisers.

List of websites


Notes

  •  Google does not rank itself in its Network Ad Planner.