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A site is a collection of publicly accessible, interlinked Websites that share a solitary domain. Websites can be produced and kept by a private, team, organisation or company to serve a variety of functions. Together, all openly available web sites constitute the Net. Websites can be found in an almost endless range, consisting of instructional sites, information sites, online forums, social networks websites, e-commerce websites, as well as so on.
What is Pligg?

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