There are now more than 100 million web sites on the Internet, which gained 3.5 million sites last month to continue the dynamic growth seen throughout 2006. In the November 2006 survey we received responses from 101,435,253 sites, up from 97.9 million sites last month.
Like Alexa, it’s difficult to see how accurate this really is. In the end though, they show that less than half of the 100 Million are actually active domains. The -actual- sites that are visited at least once a month would likely be far less than that.