Koen Kuipers of the FinishJoomla.com site pointed us to a new post that gives some usage numbers about how many groups out there are using the popular content management system to power their sites.

We all know that Joomla is a tremendously popular CMS. In the past several attempts have been made to estimate the number of websites using Joomla. While these attempts were worthy contributions to the discussion, all of them were using their own methods and therefore had their own shortcomings. Several of the earlier attempts will be discussed and a new method for estimating the number of websites that use Joomla will be presented.

They look at the methods used by previous studies and how their method is different using this "new method". They've broken it down by number of sites, then number of domains, then total number of active domains based on publicly available statistics from other groups. In the end, out of the huge number of sites available on the web today, they came up with the number of around 1.5 to 2 million of them to be running Joomla.