http://www.microsoft-watch.org/cgi-bin/ranking.htm
The first number we fetch is Alexa’s traffic rank for a domain on the web. This is based on a sampling of actual traffic to that domain, and it comes from the “phone home” feature on Alexa’s toolbar…
The second number reported by this web ranking tool is a count of total external backlinks from Yahoo. An external backlink is a link to a specific page from outside of that page’s own domain. Yahoo has much better reporting for backlinks than Google…