Updated June 30, 2013
WordPress is by far the most common blogging platform online. It powers 22% of sites on the Internet; no other content management system comes close to its widespread usage. It’s free. It’s robust. It’s highly extensible, making it a developer’s playground for plugins, so site owners can customize and tweak blogs in a thousand different ways to create a useful and unique site experiences for visitors. And WordPress is so widely used, that web hosting providers bend over backwards to offer cheap, reliable WordPress web hosting with features like “one-click WordPress install” (click the link to see WHDb’s entire list of WordPress hosts).