Free Software Goodness
FreeLanguage.org is powered by a web-based content management system (CMS) called Drupal.
You might now know it, but you own this software. It is yours. You can even sell it if you want.
Basically, this license gives the public ownership of the software, and allows for any modifications to be made to it. That is why there are so many nifty features on this site. :)