This is open source software that you can freely download and use to create and manage your own websites. There is an increasingly larger 3rd party module community with both free and commercial "addons" or modules that you can install and customise for your website. The same can be said for free and commercial "skins" and "containers" which change the look and feel of your website.
In 2007, the number of registered users broke the 400,000 mark and 400 to 500 new users are joining each day.
You can choose to install the software on your home pc or home server using windows server software, or choose to have it hosted by a web hosting company... or both!
I have listed some of the more popular websites devoted to dotnetnuke that I have found over the last few years :