What is the Alexa Traffic Ranking ... ???
See explanation below ...
A list of all sites on the Web, sorted by traffic ...Calculate Alexa traffic ranking by analyzing the Web usage of millions of Alexa Toolbar users and data obtained from other sources as diverse traffic data. The information is sorted, sifted, anonymous, counted, and computed, until, finally, we get traffic rank shown in the Alexa service. The process is relatively complex, but if you have a need to know, please read on.What is Traffic Rank?The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and data obtained from other sources as diverse traffic data, and is a combined measure of page views and users (reach). As a first step, Alexa calculating the reach and number of page views for all sites on the Web every day. The main Alexa traffic rank is based on values derived from both the average amount of time (so that the site's ranking reflects the number of users who visit the site and the number of pages on the site viewed by those users). The change is determined by comparing the three months current site's ranking with a rating of three months ago. For example, on July 1, the three-month change would show the difference between the rank based on traffic during the first quarter of this year and the rank based on traffic during the second quarter.Is your website and web host?Traffic count for the site, which is usually defined at the domain level. For example, Web hosts www.msn.com, carpoint.msn.com and slate.msn.com all treated as part of the same site, as they are all on the same domain, msn.com. The exception is a blog or personal home pages, which are treated separately if they can be automatically identified as such from the URL. Also, the sites were found to serve the same content (mirrors) are generally counted together as the site sama.Apa Reach?Reaching measures the number of users. The range is usually expressed as a percentage of all internet users who visit a particular site. So, for example, if a site like yahoo.com has a reach of 28%, this means that all global Internet users measured by Alexa, 28% of them visit yahoo.com. Alexa one week and three months at an average daily range of sizes, the average over a period of time. The change is determined by comparing the three-month range currently a site with the values of the three months lalu.Apa Pageviews?Page views measure the number of pages viewed by site visitors. Display multiple pages of the same page made by the same user on the same day counted only once. The page views per user numbers are the average number of unique pages viewed per user per day by the visitors to the site. The change is determined by comparing the three-month display the current page number of sites with those from three months ago.How Do Traffic Trend Graph Calculated?Trend charts show daily traffic ranking site, charted over time. Daily traffic rank reflects the traffic to your site based on data for one day. Instead, the main traffic rank shown in the Alexa Toolbar and elsewhere in the service is calculated from three months of aggregate traffic data.Rating of daily traffic will sometimes benefit sites with sporadically high traffic, while the three-month traffic ranking benefits sites with consistent traffic over time. Since we feel that consistent traffic is a better indication of the value of a site, we have chosen to use the three-month traffic rank to represent the overall popularity of the site. We use the daily traffic rank in the Trend graphs because it allows you to see short-term fluctuations in traffic much more clearly.It is possible for the three-month traffic rank a site higher than the single daily rank shown in the Trend graphs. On any given day there may be many sites that temporarily shoot up in the rankings. But if the site has consistent traffic performance, may end up with the best ranking when the traffic data collected in an average of three months. A good analogy is a four-day golf tournament: if a different player comes first in every game, but you come in second in all four games, you can end up winning the tournament.What is Data Normalization?Alexa ranking methodology corrects a large number of potential bias and calculate the appropriate rank. We normalize based on the geographical location of website visitors. We correct the bias in the demographic distribution of the site's visitors. We correct the potential bias in the data collected from our Alexa Toolbar to better represent the types of site visitors who may not use the Alexa Toolbar.How Movers & Shakers Calculated?Movers and shakers list is based on changes in average reach (number of users). For every site on the internet, we calculate the average weekly reach and compare it with the average reach during previous weeks. The more significant the change, the higher the site will be on the list. Percent change shown on the Movers & Shakers list is based on the change in reach. It is important to note that the traffic rank shown on the Movers & Shakers page are weekly traffic rank, they are not the same as the three-month average traffic rank shown in the Alexa service is not the same as the other and reach numbers used to generate the list.Some Important Notes:The data are based on a set of traffic that uses the Alexa toolbar data, which may not be a representative sample of the global Internet population. So far our users is different samples of the set of all Internet users, our traffic estimates may over-or under-estimate the actual traffic to a particular site.In some cases traffic data may also be affected by our definition of "site". With tens of millions of hosts on the Internet, our automated procedures for determining host serving the "same" content may be incorrect and / or out-of-date. Similarly, the determination of domains and home pages may not always be accurate.Sites with relatively low traffic will not be accurately ranked by Alexa. Alexa Data derived from a large sample of several million Alexa Toolbar users and other traffic data sources, but it's the size and concentration of the most popular users on the site makes it difficult to accurately rank sites with less than 1,000 monthly visitors. Generally, traffic rankings 100,000 and above should be regarded as unreliable. Instead, the site is closer to # 1, the more reliable ranking.May be useful ... (",)
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