Alexa is a website position company which is run by Amazon . com. They’ve got a toolbar which users set up inside their web browser. If they visit a site, this data is transmitted to Alexa who make use of it to rank all of the websites on the net with regards to visitors to the websites. Google is rated number one. Alexa have got many million customers with the plugin, which means this sounds extraordinary. Nevertheless, individuals that often set up the toolbar usually are computer savvy. So the Alexa ratings might be biased toward the actual websites which those people who are computer savvy have a tendency to visit more often.