State of Search runs on WordPress. As do 72.4 million other websites. That is 53.8% of all sites using a content management system. These are quite impressive numbers. But there are a few more impressive stats when it comes to WordPress.
Joost de Valk (Yoast) decided to make a plugin out of the statistics he could collect about the tool on which he has made several very successful plugins. That infographic results in a very impressive list of facts about this CMS, truly a phenomenon: WordPress FTW!