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https://mxsmirnov.com/2012/02/17/open-graph-%d1%82%d1%80%d0%b5%d1%82%d1%8c%d0%b5-%d0%bf%d0%be%d0%ba%d0%be%d0%bb%d0%b5%d0%bd%d0%b8%d0%b5-%d0%b3%d0%bb%d0%be%d0%b1%d0%b0%d0%bb%d1%8c%d0%bd%d0%be%d0%b9-%d1%81%d0%b5%d1%82%d0%b8/
Open Graph: Третье поколение глобальной сети