According to Netcraft.com (the authority in this field), there are over 100 million active sites and blogs on the Web. The ranking you see in each Alexa-certified Traffic Ranking button (certified by Alexa) shows you where each site ranks in traffic, out of all those 100,000,000+ sites.
A site that ranks at 1,000,000 (or better) is in the Top 1% of all sites. However, since Alexa is not perfect, we eliminate SBI! sites that do not have sufficiently high traffic to "support" the Alexa score. In other words, every Top 1% site shown is truly a Top 1% site, supported by high traffic.
This is merely a small sample of some of SBI!'s Top 1% sites, to show you the power of SBI!. Many more high-traffic, Top 1% sites are not shown. Where else have you ever seen proof like this?
Alexa.com is the leading traffic-measurement company on the Net (like the Nielsen TV ratings, except for the Web). It is an Amazon-owned service that measures traffic-popularity based on a sample of millions of users who are tracked as they surf, providing comprehensive traffic ranking figures.