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A site is a collection of openly accessible, interlinked Websites that share a solitary domain. Websites can be produced and also kept by an individual, group, service or company to serve a range of objectives. With each other, all openly easily accessible websites make up the Net. Sites can be found in a nearly endless selection, including academic websites, information sites, discussion forums, social networks websites, ecommerce sites, and so on.
What is Pligg?

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