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A site is a collection of openly available, interlinked Websites that share a single domain. Internet sites can be created and preserved by an individual, team, organisation or company to serve a variety of objectives. With each other, all publicly obtainable web sites comprise the Web. Websites are available in an almost limitless selection, including academic websites, news websites, discussion forums, social media sites sites, ecommerce websites, and also so on.
What is Pligg?

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