https://qooah.com/2011/11/25/%e6%9c%89%e5%82%b3-facebook-%e6%89%8b%e6%a9%9f%e5%b0%87%e6%96%bc-2012-%e5%b9%b4%e7%ac%ac%e4%ba%8c%e5%ad%a3%e4%b8%8a%e5%b8%82/