Pligg is an open source CMS social publishing software that encourages visitors to register on your website so that they can submit content and connect with other users. It is used to setup your own social publishing community in minutes.
In this how-to, I use CentOS 6.4 to setup this Website. My hostname and IP Address are server.unixmen.com and 192.168.1.200/24 respectively. Change these values as per your setup.