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Friendster has been granted its fourth patent regarding social networking, and still has more than a dozen patent applications under consideration. The current patent is for “compatibility scoring of users in a social network”, or in simpler terms how compatible are users of a social network to each other. The patent outlines a technology that is being used by almost all social networks, this begs the question that if and when Friendster could actually demand payments from the likes of MySpace and Facebook.