Alexa Monitor is a small Windows gadget that will help you knows Alexa Traffic Rank of selected site. In simple terms, Alexa Traffic Rank is a rough measure of a website’s popularity, compared with all the others out there on the internet, taking into account both the number of visitors and the number of pages viewed on each visit. Alexa collects traffic data on a daily basis from millions of users who have installed the Alexa toolbar, and other sources, and then uses a complex mathematical formula on three months’ worth of data to arrive at the ranking for each site. This can be interpreted as the website’s position in a massive league table based on both visitor numbers and the number of pages viewed by each visitor. The ‘most popular’ site is given a rank of 1, the second ‘most popular’ a rank of 2, and so on down to the millions of websites that receive relatively few visitors.