I was an early user of WordPress and still use it today in many of my own sites. We use WordPress for many different applications and have developed a suite of tools for affiliate marketers using WordPress, among others tools.
This is a medium that allows us to set your site up to where you can manage it on your own. Because it is open source, WordPress is powerful. There are many tools available for WordPress for free. Many times we have needed specific functionality for WordPress and have developed it for ourselves or for our client.