Make changes to your web site from anywhere. The inception of content management systems marked the end of paying a web developer to perform updates to your web site, from the simplest of text changes to image swaps. You have complete control of your web content and can change it as often as you like from any computer with a web browser.
Open source (PHP and MySQL) and license-free, WordPress is a great CMS for building a site for a small business. Sites built on WordPress rank well with Search Engines, and its interface is intuitive to use.