Certified Site Metrics are metrics that are directly-measured from the website instead of estimated.The website owner has installed an Alexa Certify Code on the pages of their site and chosen to show the metrics publicly.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.The change number shows the difference versus the previous 3 month period.For more information please see this explanation of how Alexa determines the number of sites linking in.
The "Sites Linking In" count shows the number of sites that Alexa found that link to this site.
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.
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.