A content management system (CMS) is an application which allows administrators to easily create, add, and edit content for a website. Content is divided into sections, categories, and content items. This content can be organized and displayed in a variety of ways, allowing for easy customization. Popular content management systems include Joomla, Mambo, and Word Press. Each system has its own unique advantages. Content Management Systems are becoming increasingly popular for large and small websites alike. Content Management Systems come with a variety of modules (i.e. add-ons). These allow for increased website functionality without the heavy costs associated with customized programming. See http://en.wikipedia.org/wiki/Content_management_system for more information.