This popular source, a subsidiary of Amazon, provides upon registration rankings of websites (global or by country) based on number of unique visitors and page views. For each site, the following information is available for free: ranking, audience geographical distribution, bounce rate, time on site, daily page views, referrers, owner information, and audience demographics. Besides the fact that it gathers information generated by users of Alexa’s toolbar, not much is known about the methodology Alexa uses to produce these figures