Alexa Internet Inc provides alexa rankings for websites based on the data collected from it's toolbars. Since the data is collected from a sample subset of the population that has the toolbar installed, it may not be very accurate. The various metrics are given below<br/><b>Alexa Rank</b>: This is the current rank that the domain has based on the last three months of data<br/><b>Top Rank</b>: This is the highest rank that the domain has ever reached<br/><b>Rank Delta</b>: This is the change in rank from the previous rank (from three months ago). A negative number means that the rank has increased from before.<br/><b>Country Rank</b>: If the domain is popular in a particular country then Alexa gives the ranking for the domain in that country<br/><b>Back Links</b>: The total back links to the domain based on Alexa data<br/><b>Address Information</b>: The registration address and details<br/><b>Related Sites</b>: List of sites related to the domain