If a site has Certified Metrics instead of estimated, that means its owner has installed code allowing us to directly measure their traffic.These metrics have a greater level of accuracy, no matter what the ranking.Estimates are more reliable the closer a site is to being ranked #1.Global traffic ranks of 100,000 are subject to large fluctuations and should be considered rough estimates.Not all websites implement our on-site analytics and publish the results.For these sites, we show estimated metrics based on traffic patterns across the web as a whole.Search Traffic The percentage of traffic, both free and paid, that come to this site from a search engine over the past 3 months, updated daily.
Site owners who install the Alexa Certify Code on their website can choose to display their Certified Metrics, such as Monthly Unique Visitors and Pageviews, if they wish.
There is not necessarily a link between the upstream site and this site.
The "Sites Linking In" count shows the number of sites that Alexa found that link to this site.
We identify these patterns by looking at the activity of millions of web users throughout the world, and using data normalization to correct for any biases.
The more traffic a site gets, the more data we have to calculate estimated metrics.