A site is a collection of publicly easily accessible, interlinked Websites that share a single domain name. Websites can be produced as well as maintained by a specific, team, company or organization to offer a range of purposes. With each other, all openly obtainable internet sites comprise the Internet. Websites are available in a virtually unlimited range, including instructional websites, information websites, discussion forums, social media sites, e-commerce websites, and so forth.
What is Pligg?

Pligg is an open source content management system that lets you easily create your own user-powered website.