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A site is a collection of openly accessible, interlinked Websites that share a single domain name. Websites can be created and also kept by a specific, group, business or company to serve a variety of objectives. With each other, all openly available sites make up the Internet. Sites are available in a nearly countless selection, including academic websites, information websites, forums, social media sites websites, 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.